Sort by
Relevancy

Free Stories

100%
delicious virile male flesh
Tasted delicious virile male flesh… The breeze caressed my swollen nipples giving me pleasant shivers. The two glasses of Riesling had also contributed to my excitement. My crotch was burning as if the disappearing sun had blown all its thermal energy into me. Under my fine lace panties, purple o... Read full Story
hippocampus_171 2023-04-23 4,772 anal Small Tits Amateur Creampie Blowjob Mature small cock big ass feminisation cum in mouth gaycd virile
100%
Uncle sweet Lover
Uncle Barney called me this morning and wanted me to keep my evening free. He wanted to meet me at the motel with a surprise for me. I was so excited and could hardly wait. I had to decide on something to wear, but when I thought about it, I realized that I wanted to wear something special. He would... Read full Story
Regina10 2024-02-19 3,911 anal Crossdresser Big Tits Creampie Fetish Blowjob Big Cock Ebony Ladyboy Guy Fucks Shemale Mature big ass femboy
33%
sex
Hello I am mahan Very handsome and curious. The date goes back to last year. With our sister, Sepehr, from childhood, we were on the floor of Khalmun Arshida's daughter. One day we went out with the scene, Arshida called me and his parents went to Istanbul and that lone. And asked us to go over the... Read full Story
sima2000 2019-04-18 3,526 Amateur Big Tits Creampie gangbang Shemale and Girl pov double anal
81%
My first time getting a big cock in my ass
I got talking with a relatively local guy, much older than us, but had a thick 8.5" uncut cock, which was perfect for what I wanted to watch enter my Mrs. Our messages went something like this... Me "Did you want to meet up first?" Him "If you want" Me "We'll chat about a plan, then I'll... Read full Story
BalkanLoco91Ri 2019-08-26 7,421 Amateur Cumshot Bareback Creampie Blowjob Big Cock Homemade pov Ass to Mouth
92%
Sissy schoolgirl and her black daddy
I can't believe this is happening right now. Here I am, a 16 year old white boy dressed in the sluttiest schoolgirl costume and makeup I have ever seen, being barebacked by an older, married black man. How'd I get so lucky?! Let me start at the beginning... It was summer time. As always I spent m... Read full Story
shemale lover 2013-06-22 39,336 Teen (18+) Bareback Creampie Lingerie ass fucking Interracial cd
100%
TG affair in Bimini
The day was rainy and weather was dreary, not much to do and have the day off. I fly a charter plane that takes people to and from the Bahamas from Ft Lauderdale. My girlfriend Jan and I only stay together a few days a week, she is in Real Estate and with my schedule we have not been together in t... Read full Story
Jon Paul 2021-04-19 3,143 Teen (18+) Bareback Creampie Blowjob Guy Fucks Shemale
90%
Thai Ladyboy
One year ago, when I was 19 I went back to Thailand. The year before was to see the sights and explore the country, the second was more exploring and more fun, the third and final time was to get with as many ladyboys as possible. I had always been curious about trans women. Im not attracted to ... Read full Story
BEN437 2018-11-19 13,059 Teen (18+) Amateur Cumshot Bareback Creampie Blowjob Big Cock Asian Ladyboy domination Guy Fucks Shemale cum in mouth
100%
Thai Ladyboy
One year ago, when I was 19 I went back to Thailand. The year before was to see the sights and explore the country, the second was more exploring and more fun, the third and final time was to get with as many ladyboys as possible. I had always been curious about trans women. Im not attracted to ... Read full Story
BEN437 2018-11-19 4,835 Teen (18+) Amateur Cumshot Bareback Creampie Blowjob Big Cock Asian Ladyboy domination Guy Fucks Shemale cum in mouth
72%
ACROSS THE STREET AND TWO DOORS DOWN by Spanky de Bautumn
Jamie knew he was different. He didn’t fit in with the other boys, but he didn’t feel like he fit in with the girls either, he just knew he was different. He wasn’t into dolls or balls. He was the smallest boy in his class and more than half the girls outweighed him. But the one thing he had going f... Read full Story
SpankydeBautumn 2021-01-29 11,116 Teen (18+) Small Tits Crossdresser Fetish Blowjob Lingerie Guy Fucks Shemale cum in mouth
45%
That ass was amazing
another adventure from fb i met a friend thru a relative only thing is he was playing and i was not he asked me if i would fuck this girl not to attractive but with the kind of ass i like plump,juicy u see i,m strictly top and i luv to fuck expecially ass,the bigger the better so i sent her a friend... Read full Story
jrryder 2014-02-18 3,744 tranny suck Creampie ass fucking Guy Fucks Shemale
92%
How do you do it?
this is just a quick little story. or really a question i could say. at first trannys were a complete joke for me. my friend tricked me into watching the porn cause the guy looked like a girl and bam when i saw the penis i turned the video off. I couldnt stop thinking about it to the point where ... Read full Story
coolguy456 2015-02-15 3,423 Teen (18+) Shemale Fucks Guy Ladyboy big ass
91%
My wife found out I also love cock
Even though I've been a tranny lover since I was 18 I ended up marrying Barb she had a set of tits and an ass built for speed. I never told her about my past nor did I pump her for her past. We had been married for a couple of months when I got that need for big black cock again so while Barb slept ... Read full Story
In Need Of Some Huge Black Cock 2019-04-30 9,036 Stockings Big Tits Creampie Big Cock cum in mouth double anal
100%
First Encounter (Mexican Travesti)
I grew up near the U.S.-Mexico border and am ½ Mexican Hispanic and ½ Anglo (white). I visited Nogales Senora on the Mexican side on and off during my teen years. As a young adult, I was fearless and sometimes went across alone to visit the strip clubs, get a cheap lunch, or look for Mexican sweetie... Read full Story
AllenB 2022-09-07 6,585 anal sex Shemale Fucks Guy Blowjob mexicana cum in ass first time with a tranny
84%
Shool teen crossdresser first time sex
I was just a young boy then, senior in high school, horny as hell and dreaming of my first gay experience since sitting in my new red lace thong and white lacy bra and discovering the one porno in the house everyone kept hiding from me. I guess they thought my s****rs panty drawer held no interest f... Read full Story
shemale lover 2014-11-21 18,243 first time suck fingering Lingerie ass fucking cd
50%
lust of a sex-agenarian nana-pops
Frenzied lust of a sex-agenarian nana-pops; between dream and reality I had never fantasized of a manly man, even after offering my virginity; to a fabulous sissy. Before my new Era, my fantasy preferences were always with glabrous he-she’s, same about my relationships after… BUT BUT BUT… My last t... Read full Story
hippocampus_171 2023-07-09 4,406 anal Small Tits Amateur Group Sex Masturbation Guy Fucks Shemale Sex Toys Mature small cock big ass sissy femboy
100%
A Series of Perverse Dreams, Part 2
Three or four days had passed since my torrid alley way dream. Hannah had recently come over to share a few glasses of wine and a steamy fuck session in the shower. She had definitely embraced the ways of edging I had shown her because when she came in my mouth I could barely contain the massive amo... Read full Story
KaceyKlarissa 2024-02-29 3,380 Crossdresser Big Tits Cumshot Bareback Fetish Blowjob blonde Big Cock big ass Futanari bukkake sissy cum in mouth
66%
A Series of Perverse Dreams, Part 3
After my last couple dreams, I began to watch a ton of gangbang and bukkake porn. I had jerked to this kinda stuff before but now I was watching it constantly and this time around, it was to the thought of being the girl in the scene. Something about watching a beautiful woman taking numerous cocks ... Read full Story
KaceyKlarissa 2024-03-08 3,364 anal Big Tits Cumshot Creampie Blowjob blonde gangbang big ass sissy Ass to Mouth cum in mouth bimbo bimbofication
100%
Sandi Part 3
Sandi and I have been here in L.A. for a couple of days and Sandi and I are taking turns handing out our resumes Sandi is going to Paramount Studios today and I am looking for an apartment or house to rent. She asked," Mike do you have a resume? I know where that studio is where you wan... Read full Story
shemale lover 2012-01-07 2,584 Big Tits Creampie ass fucking
100%
Dimensional Portals Suck Ass
Marley was dead: to begin with. Hold it… no, no that’s not right. My mind is wandering. What was I gonna write about? MATT! Yeah, Matt was a bastard. And I mean it in the sense that he sucked monkey balls. That’s an expression I like, sucked monkey balls. Anybody ever played blows... Read full Story
shemale lover 2012-09-21 2,918 Creampie oral facial huge tits
100%
Big cock heaven.
I live in Vancouver and saw a beautiful trans escort online and couldn’t resist setting up a meeting. I met her at a hotel and she was just as beautiful in person as online. She was Asian and had the most wonderful big tits and ass. Her cock was a solid 8 inches, uncut with a big mushroom head, whic... Read full Story
Eyecandy64 2024-02-06 5,445 anal Bareback Creampie Shemale Fucks Guy Blowjob Big Cock Asian
100%
sex-agenarian's onanic lust
An onanic lust of a sex-agenarian that I am; I'M IN BIG HEAT; it's the season of bodily reunions in nature... I'm like an elephant(e) waiting to be satisfied. My cloaca is starting to titillate at the mere sight (look hah!) of a guy's swollen crotch on the street... I activated all my sensors to sa... Read full Story
hippocampus_171 2024-03-09 3,016 anal solo Amateur Masturbation Creampie Sex Toys Mature small cock
85%
Tits and Cock
I had always wanted to fuck a shemale. The idea of a hot chick with a huge thick cock really turned me on. I called an escort service and asked for a lady with something extra. About and hour and a half later my doorbell rang. I open the door and there stood a tall curvy beauty, must have been six f... Read full Story
shemale lover 2012-03-25 3,939 anal sex Big Tits Creampie orgasm jerking off huge cock
100%
Trying new sexual pleasure
I was 18,when I started to exploring other sexual pleasure,you could say that I had a wild,and kinky side.when ever there was nobody home,I would go in the bathroom,and grab a pair of my sister panties,and would put them on.it felt so good ,as my cock would get totaly hard,I even wet far wearing her... Read full Story
shemale lover 2012-07-15 2,640 Crossdresser Creampie doggy style oral sex assfucking
93%
Dominated
I was out walking one night, a walk i used to make with my girlfriend. We had just broken up a few days ago. I don't know why I was walking here again, the memories weren't good ones. She had cheated on me with my best friend. Anyways, I was walking this familiar path through the city streets when I... Read full Story
shemale lover 2012-11-12 6,677 anal tranny Creampie oral
71%
TGirl Initiation by 3 BIG BLACK 12
In my teen years I was often told that I was quite feminine.The high school punks always told me that I filled out the back of my jeans in a girly way. After taking a shower one day I did notice that they were right, I had a nice white bubble butt. Not to mention that my lips were also quite girly. ... Read full Story
TgirlJill4BBC 2013-06-04 8,846 Stockings Cumshot suck Big Cock Lingerie Interracial Latex
97%
Shemale fucks guy - My gf fucks my slutty ass.
I have a shemale girlfriend & we both are in a relationship. One day, I decide to give her a visit. I'm 5'7 guy & she's 6 feet. That makes her tall & intimidating & whenever we meet, it's me who become her gf. I visit her, she takes me in. SHe pulls me towards her while giving me a deep kiss. I ... Read full Story
glodobox 2020-12-04 21,769 Amateur Creampie Shemale Fucks Guy Fetish Blowjob Big Cock Ladyboy Homemade cum in mouth
80%
The Farm
“See you Sunday, baby,” said Marcus Jenkins to his wife, Tasha. “Alright! Have a good day at work,” the wireless phone company retail store manager smiled. “Love you, Kobe! Love you, Tiara,” the wastewater plant operator said to his offspring. “Love you, too, daddy,” the youngsters rang out in un... Read full Story
Faggyboi and Puzziboi 2021-12-08 5,212 Teen (18+) gangbang Guy Fucks Shemale sissy femboy Ass to Mouth
100%
Young Hercules: Versatile Stud by The Fan
Prometheus Academy. It sat atop a hill, dominating the vast region of Thessaly, Greece. It was the most prestigious school in the area. The most famous men and women of the world came there to get their education. The sons and daughters of kings and queens, ... Read full Story
shemale lover 2011-12-01 3,175 anal Creampie jacking off
100%
Totally dominated
I was out walking one night, a walk i used to make with my girlfriend. We had just broken up a few days ago. I don't know why I was walking here again, the memories weren't good ones. She had cheated on me with my best friend. Anyways, I was walking this familiar path through the city streets when I... Read full Story
shemale lover 2012-10-27 5,363 anal Group Sex Cumshot Creampie Big Cock oral
75%
The dark elavator
I was working on a inportent computer tech. when this women send me a pc to pc message with a picture of a women say want to tast me baby. i look up and she says well how about it and winks i goto get lunch so i goto the elevator but it full. i dont want to take the red elevator its lights fliker... Read full Story
shemale lover 2012-11-18 2,802 anal sex sucking Creampie rimming
100%
Got my ass pounded in Miami by a tranny escort
Got my ass pounded in Miami by a beautiful tranny escort with a 10 inch thick cock. Years ago I was in Miami for a business trip. Four days just me in my hotel room. I decided to treat myself to some of the X rated channels that my hotel provided. As usual I went straight to the tranny porn.... Read full Story
My Shemale Attraction 2023-01-03 6,516 Amateur Big Tits Masturbation Creampie Shemale Fucks Guy Blowjob
100%
First time with big surprise
My first story translated into English, I hope you like it. It was late at night, I had been drinking with friends and was on my way home. I am a man in his early 30s, smartly dressed and looking quite attractive. The night was beautiful, clear sky, warm and in the city were some people on the ... Read full Story
Marten1201 2023-01-06 6,543 Big Tits Bareback Creampie Shemale Fucks Guy blonde Big Cock
100%
Towel Boi: Agreement Signed
Ralph moved the mouse to wake up the computer. He navigated to his legal docs account and downloaded a generic pre-existing relationship agreement. He asked for the spelling of the new hire’s first and last name. “First name K-A-S-E-Y. Last name S-T-E-V-E-N-S.” “Got it,” acknowledged the owner. ... Read full Story
Faggyboi and Puzziboi 2023-11-14 5,616 Crossdresser Bareback Creampie Blowjob Guy Fucks Shemale Interracial small cock big ass sissy femboy
50%
Towel Boi: Heading to Work
“Goddamn, white boi! You got the best fuckin’ ass,” declared the father of two. His steel manly form perspired as he moved hard into the bottom. “Look at all that butt shake! Twerk it for me, baby boi!” “Yes, sir,” cooed Kasey, gyrating rhythmically. “Hell yeah! It’s like fucking two big ol’ ma... Read full Story
Faggyboi and Puzziboi 2023-11-17 5,746 anal Crossdresser Bareback Creampie Blowjob gangbang Lingerie Guy Fucks Shemale Interracial sissy femboy bbc
97%
Big Ones Go A Long Way
I’m fortunate that my line of work gives me the opportunity to travel and not to dumpy places but to cool ones like Frisco, Vegas, Atlanta, Miami, etc. Last week I was in Las Vegas for a few days for a convention and had some delightful extracurricular fun. While I like what I do for a l... Read full Story
shemale lover 2018-01-24 18,425 Creampie oral stroking
100%
From accidental trans porn addiction to a cum filled booty
One night when I was around 30 or so I was watching some porn, nothing unusual for a guy like me, aka a sex addict. Sex addiction is great if you’re Tiger Woods and swimming in poon, but for guys like me - regular, awkward, slightly handsome in a very boyish way, weirdos — it’s not that fun. We... Read full Story
CDJaneBooty 2022-04-01 9,681 first time Crossdresser Amateur Cumshot Bareback Creampie Blowjob Big Cock gay Homemade Ass to Mouth curious first time with a man
100%
The Big Mature Shemale Next Door
The Big Mature Shemale Next Door SugarandSalt "Please can I just wear my old swimming trunks?" Warren begged. "No!" his mom yelled back from the other room. "Barbara purchased that for you. It was expensive so you better remember to thank her." Warren looked at himself in the full length mir... Read full Story
Gwapo67 2022-05-03 7,619 Bareback Creampie Shemale Fucks Guy Blowjob Big Cock Mature cum in mouth
100%
The Seductive Seed of a Tranny MILF
The Seductive Seed of a Tranny MILF SugarandSalt Jackson got home and immediately curled up in bed. He didn't want to move for the rest of the weekend. He'd finally worked up the courage to ask a co-worker out at work. She politely rejected the invitation. Then later on in the day, Jackson spo... Read full Story
Gwapo67 2022-05-03 7,532 Bareback Creampie Shemale Fucks Guy Blowjob Big Cock Mature cum in mouth
100%
Regina's Vagina dreams
I think I wanted to be a female from birth. I once looked through a girlie magazine out of curiosity. I had impossible dreams and I longed to trade genitalia with them. I have always fantasized about my Vagina when I was younger. It was during those times that I would drift into my own private world... Read full Story
Regina10 2024-03-01 4,246 anal Big Tits Bareback Creampie Blowjob Big Cock Ebony gangbang Guy Fucks Shemale big ass cum in mouth double anal
100%
Regina's scary, and sexy Blind Date
I had just finished doing my makeup, finally deciding which blush to use, and I thought I had some time for my meditation. However, Mr. Cobb was early. The gold minidress I wore showed enough legs, ass and tits to make any man horny, and the strappy tanned five-inch sandals, made me feel majestic ... Read full Story
Regina10 2024-03-18 3,408 anal Crossdresser Bareback Creampie Fetish Blowjob Ebony Guy Fucks Shemale big ass sissy Ass to Mouth cum in mouth
100%
Sweet Encore
I was alone tonight and feeling just a bit paranoid as I listened to the soft music. The soothing sounds put me in a seductive mood, but It seemed that all my lovers were too busy for me, or they had other plans. Uncle Barney and my detective were probably home being dutiful husbands. Bo was under h... Read full Story
Regina10 2024-05-09 1,314 Crossdresser Big Tits Bareback Creampie Blowjob blonde Big Cock Guy Fucks Shemale big ass Ass to Mouth
100%
Booty call :)
Your cock pounds my ass harder, my cheeks rippling with every deep thrust you give. The sounds of our moans and your balls slapping as you fuck me hard is suddenly broken by the ringing of your phone........... And you wake up. It's 2:30am and I've just finished work. As arranged, I'm giving... Read full Story
BalkanLoco91Ri 2019-08-26 4,984 Teen (18+) Amateur Cumshot Masturbation Bareback Creampie Blowjob Big Cock domination Sex Toys Homemade pov Ass to Mouth cum in mouth
100%
First fuck in public ;)
You’re only wearing a coat, I find a place where, I can kiss you then slide my hand between the flaps of your coat. I expose your breasts and slide my hand down across your tummy down to your pussy. My fingers start to explore your soft bush, working there way to your soft pink lips surrounding your... Read full Story
BalkanLoco91Ri 2019-08-26 3,627 Stockings Teen (18+) Amateur Big Tits Cumshot Outdoor Masturbation Bareback Creampie Blowjob Big Cock Uniform domination Homemade pov cum in mouth
80%
Getting Fucked by Sasquatch
Bill was about to show up, I had known him from a chat room for years now. I was in his town for work and we had set up this date so we could finally meet each other. I heard a hard knock at the door and when I swung it open, I just stood there in awe. It wasn’t the big beard or really long hair tha... Read full Story
pennypenny 2020-08-21 5,761 Crossdresser Bareback Creampie Fetish Blowjob Big Cock redhead domination Guy Fucks Shemale pov Ass to Mouth cum in mouth
66%
Samantha sissy TGTF
Theme and genre of the story: The genre is about gender bender, futanari, gay, physical transformations of the body, magic and biology, the kink in particular that must excite in the story is the perversion of the transformation of the body and mind through a magical element that manipulates biol... Read full Story
Samantha sissy world 2022-09-20 4,269 Teen (18+) Crossdresser Big Tits transformation transgender feminization pov sissification Cartoon magic Gender Bender
66%
Awesome day at class =)
Sooo i'm in college. and one of my professors is really hot. he's older but looks like he's in his 30's. anyway, every single day in class i would notice his huge bulge under his pants and just couldn't help but wonder =P so i figured, hey maybe i should start flirting with ... Read full Story
Amanda Lips 2018-03-02 3,313 Teen (18+) Mature Homemade pov Ass to Mouth cum in mouth webcams
100%
How my date went
There I was on TV with the sound up jus barely enough for my date and I to hear. We had gotten past the introductions at the bar we had jus left & now it seems as if those 4 shots of tequila jus wasn't enough for me to overcome how scared I was. But Alma, my date had run into Nervous Nellies like m... Read full Story
Curious_billy 2022-10-21 5,405 Teen (18+) Amateur Cumshot Masturbation Blowjob Big Cock Lingerie Homemade pov cum in mouth webcams
80%
One night Transtand ;)
One Night Transtand By BalkanMan990 Published on Lush Stories on 05 Oct 2019 I had no idea she was a trans.. I didn't stop kissing or fondling her when I found out. I went out for a drink at one of the many bars at Croatia,where my girlfriend Sabina and I were staying.Sabina and I had been drin... Read full Story
BalkanLoco91Ri 2019-10-24 8,670 Small Tits Amateur Cumshot Masturbation Creampie Shemale Fucks Guy Blowjob blonde Lingerie Guy Fucks Shemale Homemade pov cum in mouth
93%
Virgin Slut Cravings.
There have been so many times that I have had to hide how I felt because I lived my life denying who I was. I was a closet queen who was pretending to be normal. Some might have guessed my secret if they were observant. I didn't do things that other boys my age did. I love hanging out at home like a... Read full Story
Regina10 2020-09-29 8,194 Stockings Crossdresser Big Tits Cumshot Bareback Creampie Blowjob blonde Big Cock Lingerie Guy Fucks Shemale pov
96%
A Night of Lust
I was out at a night club with a few friends, and we were there for for a while before I noticed this sexy, rather short girl across from me at the bar looking over. I could tell, even from this distance that there was something special about her, I wasn’t sure what that was quite yet though. The mo... Read full Story
JessicaEdwards 2018-08-07 17,903 Stockings Amateur Cumshot Masturbation Bareback Creampie Shemale Fucks Guy Blowjob blonde Big Cock Lingerie deepthroating Guy Fucks Shemale cum swallowing deep throat deep penetration cum swapping pov Ass to Mouth cum in mouth anal fuck sloppy virgin ass
100%
Cheating Sissy Wife chapter2
My sweetheart Keith is back from his road trip and we were about to make up for lost time. He didn’t even want me to fix dinner. Instead he said that we would order pizza later. Meanwhile we started making out right there on the couch. We were both horny and anxious to get next to each other. I felt... Read full Story
Regina10 2020-10-26 4,557 Crossdresser Big Tits Cumshot Bareback Creampie Blowjob Big Cock Ladyboy Lingerie Guy Fucks Shemale pov Ass to Mouth
100%
Regina" s Love session
As Tommy entered the apartment, I couldn’t help but notice that his cock was suddenly excited and outstanding tonight and I knew the reason. I smiled to myself with confidence because my l attire was getting the job done. I was wearing my shocking pink sheer lingerie with the frilly top that accen... Read full Story
Regina10 2022-04-01 2,190 Stockings Big Tits Cumshot Bareback Creampie Blowjob Big Cock Lingerie Guy Fucks Shemale pov Ass to Mouth cum in mouth
93%
Southern Hospitality Ch. 01
XtinaSmith2017 Ash gawped at his mother, incredulous as to what she had just said. He understood the basic premise of what had happened, but the reasoning she must have had absolutely baffled him. "Why?! Why would you do that?!" He pleaded, voice light and desperate. She shrugged, looking acr... Read full Story
Gwapo67 2022-05-16 6,822 Bareback Creampie Shemale Fucks Guy Blowjob Big Cock Mature
91%
Southern Hospitality Ch. 02
XtinaSmith2017 Laura felt herself lifted lazily from the arms of sleep, her body relaxed and floating on a small cloud of pleasure, her mind filled with images, sensations, not pulled from whatever dream she had just been having but instead, memories, memories from the night before. Memories of... Read full Story
Gwapo67 2022-05-16 4,416 Bareback Creampie Shemale Fucks Guy Big Cock Mature
100%
Alexis Chapter 2
When I open the front door to my house, I'm already hard. I'm going to be home alone for an entire night, and I have a lot of things planned. I toss my backpack and jacket onto the couch, and by the time I reach my room I already have my shirt off. I let my pants drop to the floor and pull off th... Read full Story
shemale lover 2012-10-06 4,377 Creampie transformation dildo Sex Toys crossdressing
65%
Marcia Goes Back to School
Marcia was painfully nervous. She hadn't been able to eat very much in days. The upside was she was even skinnier which would make Mistress and her husband very happy. She'd always been thin and on the diet Mistress Carol had her on she was already thinner than she dreamed possible. Her anxious stom... Read full Story
shemale lover 2012-12-19 10,371 Masturbation Blowjob blonde ass fucking big boobs