Sort by
Relevancy

Free Stories

93%
Sissy Maddie's New Apartment Gangbang
I’d just moved into the big city. Me on my own in a cheap apartment block. The flat was nothing special by any means, and the room next to mine seemed to be noisy with parties. But I was glad to be on my own. I had almost finished unpacking my belongings when I came across my stash of female clothi... Read full Story
sissymaddiex 2020-09-25 10,007 Crossdresser Amateur Group Sex Cumshot Bareback Creampie Blowjob gangbang Lingerie Homemade sissy cum in mouth double anal
100%
Vanessa and the workmen gangbang
The three workmen were slaving away in the back garden, in the hot sun. Vanessa watched them from the upstairs bedroom window, getting more excited by the second. Under her robe she was wearing a beautiful red basque with a red g-string, black stockings and five inch heels. This was topped off with ... Read full Story
Vanessa Luv 2020-05-12 5,580 Crossdresser Group Sex gangbang Lingerie cum in mouth double anal
100%
First Cross-dressings Loosing Anal Virginity
It happened after a month of me blowing that guy twice...I mean I was so damn excited and was craving for his cock....I was blowing him every weekend in his car after the school...his cock was almost 7 inches and was so thick and that I like so so much the gagging he was giving everytime, that chock... Read full Story
Trapbomb1 2022-07-29 6,763 Teen (18+) Crossdresser Bareback Creampie Blowjob Big Cock virgin virginity sissy cum in mouth double anal sissy slut virgin ass
100%
Double Anal With a shemale
....He answered the door and there she was beautiful as ever. He had just paid 500 dollars to have a transsexual e****t come directly to his door and greet him. She had on a long pea coat and thigh high boots. When she took the pea coat off all she had on was a one piece swimsuit. Her tits were a 36... Read full Story
shemale lover 2015-04-29 5,389 tranny suck Big Cock ass fucking dp precum
75%
Flowers in the Heart
Chapter 1 "Hey Scott, Fauna kind of likes you," Jenna said, snickering. "Hey Jenna, it hard to hear yourself over that echo?" Scott said as he caught the football, and then heaved it back to Ronnie. "Huh?" Jenna asked, puzzled. "Yeah, your head up your ... Read full Story
shemale lover 2012-11-11 10,438 anal tranny Cumshot oral
60%
My Fantasy Came True
Hello all I'm a trap or a CD or a Sissy anything you can call me.I can be your trap or Sissy. Here is my first BBC Gangbang. When I got my fantasy fuck.I'm a Sissy Bitch of my friend.He make my fantasy came true.So here's the story. Last week I got my First BBC Gangbang.It's... Read full Story
TrapBomb 2016-09-26 9,038 Big Cock gangbang deep throat double anal trap c
40%
Dating all whole my life
Julia and Ilya, together 10 years It was more than 10 years and 2 children ago. In December 2005, we agreed to meet at the gate of my office after a working day. I did not go out godlessly for a long time (40 minutes from the appointed time), but he still waited. I hope he does not regret it ... Read full Story
PornoDating 2019-08-15 3,980 Crossdresser Amateur Big Tits Cumshot Bareback Creampie Fetish Blowjob blonde Big Cock Asian gangbang domination Guy Fucks Shemale Interracial sex Mature Futanari Frottage Compilation Ass to Mouth Cartoon cum in mouth double anal dating life in Mars? life
87%
Mi primo y yo (parte 3)
Hola otra vez hermosos!!!, hoy les contaré la siguiente parte para que entren en contexto lean las historias anteriores nenes :* así entenderán lo que a continuación les relatare. Bien una vez llegando a mi casa después de una noche riquísima con mi vecino Chris tome mi celular el cual había olvi... Read full Story
Janin 2020-07-10 2,972 Amateur Masturbation Blowjob Big Cock Lingerie domination Sex Toys double anal
100%
HELPLESS TO MY CRAVING FOR BLACK COCK
This is a totally true account of my addiction to meth and its hand in turning me into the he[pless sissy I've become to my weakness for BBC. My name as a regular male is Richie Budd. But by reading this you'll soon realize that nothing is normal. Not only was I Richard Budd. I spent an equal, if ... Read full Story
Tvtrinity 2021-04-07 9,871 Crossdresser Amateur Group Sex gangbang Interracial transgender sissy bbc Black Owned owned white boy pimped force feminised BNWO
100%
A Perfect Pandemic: A Transsexual Transition in a Troubled Time
A Perfect Pandemic A Transsexual Transition in a Troubled Time A Novelette by Alexandra Rios Text Copyright Reserved © August, 2021 Dedication Transgender Day of Remembrance is a solemn occasion. I am offering “A Perfect Pandemic” for free as an antidote to the fear, phobia, discrimination, d... Read full Story
the greatest liar 2021-11-16 5,166 Teen (18+) Crossdresser Group Sex Big Tits Bareback Creampie Big Cock gangbang domination Guy Fucks Shemale Interracial double anal webcams
100%
Chinese Apple Turnover
I crashed harder than anytime ever in my life and my dreams were fucking vivid. I dreamt of being fucked. And of sucking huge cock and getting face fucked so hard that I was cock drunk and high from holding my breath so much. But so really horny from him doing that, so into that cock. Of Jax f... Read full Story
ASSEaster5678 2019-01-09 6,578 anal sex Shemale Fucks Guy Asian Guy Fucks Shemale
94%
Sissy Slut: Gang Favored
I confess I am a nymphomaniac shemale slut who loves being the object of a man’s desires. That's why I was out here with these hookers trying to hook up with somebody to have sex. I'm either having sex or I'm thinking about having sex most of the time I like being a honey. I love having sex with men... Read full Story
Regina10 2021-03-02 7,502 Stockings Big Tits Cumshot Bareback Fetish Blowjob Big Cock Ladyboy gangbang Guy Fucks Shemale cum in mouth double anal
88%
Tipping Point -- Chapter 1: Blow by Blow
Chapter 1: Blow by Blow October 12th Thursday evening. Tick, tick tick... the minutes pass by while Nick lies on his back, staring at the white ceiling fan that hovers above. He raises his head, bats his eye lashes, and yawns. His long, wavy, auburn hair falls down his back with small curls. ... Read full Story
Danielle Pillory 2015-11-24 5,367 anal shemale domination spanking submission
94%
CD and BBC Gangbang 1
My name is Mike, as a "Gurl" I go by Fiona. I am a gay man, mid thrities, white, 5' 9' 165, reasonably handsome, both in and out of women's clothes. One of the ways I express my sexuality is to dress as a woman and get fucked by other men. Preferably in a humiliati... Read full Story
FionaFucked 2014-10-27 13,848 Group Sex gangbang Interracial cd sissy
92%
MY Party Favor Fantasy
My Party Favor Fantasy A fictional story built around an old fantasy of mine I ran a notice on one of those sex sites that said” Help me fulfill my fantasy and I bet we take care of some of yours also. Hi there, I am Penny and I am a total bottom trans w... Read full Story
pennypenny 2019-01-08 7,279 Stockings Crossdresser Group Sex Cumshot Masturbation Bareback Creampie Fetish threesome Blowjob Big Cock gangbang Lingerie redhead domination Guy Fucks Shemale Sex Toys Ass to Mouth cum in mouth double anal
100%
Vanessa gets more than she bargained for!
Vanessa had it all planned out meticulously. She had taken the day off and planned on doing a bit of last minute shopping before checking into the hotel in the early afternoon. She eventually decided on buying a massive dildo to get her ready for the party. This would give her plenty of time to take... Read full Story
Vanessa Luv 2020-05-15 7,841 Stockings Crossdresser Group Sex Big Cock gangbang Lingerie Interracial cum in mouth double anal
50%
La bonne chair masculine…
La bonne chair masculine… La brise caressait mes mamelons gonflés me donnant des frissons agréables. Les deux verres de Riesling avaient également contribué à mon excitation. Mon entre-jambe brûlait comme si le soleil qui disparaissait avait soufflé toute son énergie thermique dans mon intérieur... Read full Story
hippocampus_171 2023-04-23 959 anal Small Tits Amateur Creampie Blowjob Mature small cock big ass feminization cum in mouth gaycd virile
100%
Fantasy 2
THE GANG BANG 02: I walk into an adult theater dressed in a black short dress with black high heels. Under my dress, I have on a black bra, black crotch less panties, a black baby doll, and a black Lace Garter with Stocking. I pay my fee into the theater and walk through the door to the seating ar... Read full Story
carriebangs 2024-07-23 652 anal Crossdresser Bareback Creampie gangbang Lingerie Interracial sissy double anal
100%
Slutty Sissy's 2 Loves
Tonight was young and I was already hot and bothered, my ass-pussy was on fire, and I could hardly wait for Bob and John to come over. I had invited them over to fulfill those erotic dreams I am constantly having about the two of them using me like a tool, and I wanted that so bad. I fantasized abou... Read full Story
Regina10 2020-11-23 4,989 Group Sex Big Tits Cumshot Bareback Blowjob Big Cock Ladyboy Lingerie Guy Fucks Shemale pov Ass to Mouth cum in mouth double anal
100%
SheMale Pussy and Cock
I once had a friend who always said "never fuck anything you can't bench-press". He was right, the biggest benefit of having sex with someone smaller and lighter than you is you can lift them easily ! On a recent trip to Thailand I couldn't take my eye's off a stunning, short, tiny but ... Read full Story
shemale lover 2012-01-24 4,240 anal shemales gay male
50%
Gangbang: Daddy's Girl
"Oh yeah...that's daddy's girl," my dad moaned as he massaged my enormous round sticky ass. I'm 18 and my sister was about 5 years older than me, so who knew how long this had been going on for, I thought to myself. At least I tried to think as I slowly closed my eyes and bit my bottom ... Read full Story
shemale lover 2012-12-16 9,365 sucking cum gangbang
100%
Weekend Fantasy
have so many fantasies....the one that gets me lately, is having access to a house out in the middle of nowhere, for a week or weekend, where i can dress up, all day. No one knows of my lustful secret....so the idea of being able to stay this way without thought, gets me so hard and such in the moo... Read full Story
martley 2020-07-20 5,072 solo Amateur Group Sex Masturbation Big Cock Lingerie domination Sex Toys Homemade self sucking cum in mouth double anal shemale + shemale
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 5,395 anal Big Tits Bareback Creampie Blowjob Big Cock Ebony gangbang Guy Fucks Shemale big ass cum in mouth double anal
85%
The Gang
I had always thought of myself as female in spite of the fact that I was born with male genitlia. Even in my earliest memories where I had witness sex, I identified with the female in the relationship. As a small young child, I had always longed for womanhood each time I heard a woman sing or especi... Read full Story
Regina10 2020-06-29 8,907 Group Sex Cumshot Blowjob Big Cock Ebony gangbang double anal
100%
Sultry Mistress,
Sultry Mistress, Natacha has now been living with me for over a year. It is a cerebral and perverse Domina who immediately wanted to submit me to her desires. She took power over me by making me discover my femininity during role-playing games. Like a spider, she imprisons me in her web a ... Read full Story
sandratvtg 2022-09-20 4,061 Stockings Amateur Lingerie domination Sex Toys
70%
Shemale Gangbang
I am not your average female. But I guess I am not your average male either. You see, I am a tranny. I make a really hot woman. I am 5'10", am slim and have dark, wavy hair that comes down to tight between my shoulder blades. The only thing I was missing was beautiful tits. So I got those as we... Read full Story
shemale lover 2011-08-27 17,422 anal Blowjob cum swallowing
68%
I meet my new Mistress for the first time
I was feeling excited about and looking forward to Friday night. The reason for this was that I intended to dress up as my alter ego, Tania Harvey, and to go for a night out to a club nearby that is popular with TG’s, TV’s and other like minded people. I took a lot of care and attention over the way... Read full Story
Tania Harvey 2017-06-26 8,136 Amateur gangbang 3some shemale on shemale dominating
83%
Las Vegas Swingers
It had been over 6 months since I seriously dated someone, and I was getting depressed and in a rut. I had directed my attention to my work and it kept me from feeling sad about my loss of someone I almost married. I had met a transsexual girl that absolutely adored, but she was tragically killed. (... Read full Story
Jon Paul 2018-06-11 10,244 Amateur Guy Fucks Shemale Mature Ass to Mouth cum in mouth double anal shemale + shemale
42%
sexy jane story
I love the idea being a crossdresser wearing women outfit bars in panties n sexy outfit not just for the sex I love sex being on my knees sucking cocks in getting fuck by a big cock see win I was very young I had sex with 3 guys one day they ask me will I suck there cocks in I sand yes we want insid... Read full Story
45sexyjane 2019-05-27 4,218 Small Tits Crossdresser Amateur Big Tits Masturbation Blowjob blonde Big Cock gangbang Lingerie Sex Toys shemale + shemale sexy crossdresser
100%
The Game 2
That next morning again Ada and I went down for breakfast and the table was smaller, It wasn't as grand as it had once been and to every guy at the table was now at least two girls. We had our normal breakfast and for once there seemed to be a little more chat between everyone, I think after bei... Read full Story
chris1989r 2022-01-24 4,445 Amateur Cumshot Bareback Shemale Fucks Guy Blowjob blonde Big Cock Asian domination Guy Fucks Shemale Ass to Mouth cum in mouth shemale + shemale
100%
My new Life with Pat. Part 2
While Jean was discussing with the lady from the next table i feel the didlo starting to vibrate and then something like a small ball move up and down into the didlo, it was a prostate massage. I saw Jean playing with a remote control, He increased and deacresed the frequency of vibration and the ... Read full Story
jperrot 2022-08-09 4,951 Amateur Bareback Shemale Fucks Guy threesome Shemale and Girl domination Guy Fucks Shemale slave Ass to Mouth double anal webcams punishment
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 5,001 anal Small Tits Amateur Creampie Blowjob Mature small cock big ass feminisation cum in mouth gaycd virile
100%
My Sugar Daddy Fucked My Girlfriend...And I Joined In
I am a shaved-smooth, boyish bisexual male slut. At 43, I still look and feel young, and I enjoy the feel of and attention from older men, the older the better, 55 and up, with gray hair, wrinkles, and very hairy chests and bods. My Daddy, a 70-year-old White man that fits this description, "owns" m... Read full Story
Chrissy Tunnell 2022-04-12 2,727 Crossdresser Amateur Shemale Fucks Guy Fetish Blowjob Ladyboy Shemale and Girl Guy Fucks Shemale Mature cum in mouth double anal
100%
A new start in life
“In life, finding a voice is speaking and living the truth. Each of you is an original. Each of you has a distinctive voice. When you find it, your story will be told. You will be heard.” John, living outside Boston, being your average accountant working with Gillette, had gone through a messy di... Read full Story
Jon Paul 2024-05-09 3,018 anal Amateur Shemale Fucks Guy Big Cock Guy Fucks Shemale small cock big ass
83%
An Arse To Die For
I'd arrived in Honolulu in the early evening from Sydney and got a cab straight to my brother-in-law's apartment on Kuhio, which he'd lent me for a fortnight while he was up in Europe on business. It's in an ideal situation, a couple of blocks back from all the hotels and Waikiki Beach. I slept l... Read full Story
shemale lover 2012-11-10 4,421 anal tranny oral
76%
Louise's Bedroom
The dark and humid night consumed the street surroundings, the rain pattered softly against the car window as Scott pulled outside Louise’s house. Louise had never agreed to let Scott visit before and he knew that this would be the only opportunity to make a good impression and be with her in the fu... Read full Story
Master VeeJay 2017-12-12 9,442 Amateur Bareback Creampie Blowjob Guy Fucks Shemale Mature
66%
a day in the life of Amber SissyZofen 264
And the days had passed one after the other and now it was the day of my date. He sent me a txt at 8.30 on Saturday morning to say he was coming And you remember he was leaving his phone at home in case his wife called You know I had sent him my address, parking advice and left the gate ajar. ... Read full Story
amberdoll 2020-09-15 2,695 Stockings Small Tits Crossdresser Amateur Masturbation Bareback Creampie blonde Lingerie Homemade cum in mouth
100%
Beefy Buns
It's hard to get good help. Probably, that's true in any business, but it's especially difficult to find decent employees in the fast food racket. Believe me; I've tried. I manage the local Beefy Buns franchise--burgers, fries, and shakes is our mainstay, but the menu also features fish and chick... Read full Story
shemale lover 2012-04-22 6,118 anal sex Creampie blonde shemale
100%
Dawn's Orgy
Dawn always tried to invite new exciting guests to her annual orgy. One year she invited beautiful transvestites. Another time she invited female body builders. Over the years, she provided male and female strippers, drag queens and porn stars. This year topped them all. Nobody spiced up the gatheri... Read full Story
shemale lover 2012-08-03 3,752 anal sex Cumshot transsexual
100%
Camming down the rabbit hole Ch5
I was jolted out of my sleep by the phone on my bedside table vibrating, bleary eyed I picked it up and saw a message from the couriers that a package would be delivered today around 4pm. The realisation that this was the package I had been waiting for and I could finally wear something else in my s... Read full Story
Dani_does_Dallas 2021-09-29 5,018 Stockings Crossdresser solo Amateur Cumshot Masturbation Lingerie Sex Toys Homemade cum in mouth webcams
87%
Melissa
I'm a Japanese in my early forties living in Japan and I met Melissa online about a year and a half ago when looking for someone to chat. She is a black, 6 feet 2 inches tall, around 160 pounds and therefore a slim and beautiful transgender girl in her mid twenties. From Brazil, she is very friendl... Read full Story
cttyy 2020-02-24 15,456 Shemale Fucks Guy threesome Big Cock domination cum in mouth double anal
100%
Alessia Travestita Hung Mature Blonde British Porn Star
Alessia Travestita Hung Mature Blonde British Porn Star If you like Transexuals, big cocks, bondage, domination, deep throat, fisting, spit roast, 69, ass fucking, cum swallowing and big loads this story is for you. If not don’t bother reading. If you like my story please leave comments and ... Read full Story
darrell 2022-01-03 4,659 Group Sex Cumshot Bareback Shemale Fucks Guy Blowjob Big Cock gangbang domination Sex Toys Mature cum in mouth shemale + shemale
100%
Couple and a Tranny
There is a saying that a single man looking for companionship and good fortune will seek someone for marriage. Lydia and I met several months ago on an online dating site. We agreed to meet at a bar restaurant for drinks and initial meeting. She was at the bar wearing a yellow sundress, white painte... Read full Story
Jon Paul 2022-09-20 5,325 Cumshot Outdoor Latina Bareback threesome Ladyboy Shemale and Girl Guy Fucks Shemale Ass to Mouth double anal
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 4,711 anal Small Tits Amateur Group Sex Masturbation Guy Fucks Shemale Sex Toys Mature small cock big ass sissy femboy
50%
An alumni gathering like no other
An alumni gathering like no other; Sea/Sand/Sun' and why not 'Sex' in a vancancy club; we got together to celebrate the 40th anniversary of our 1st meeting at university. The only rule was to come without a partner to relive our 'frosh' days. with friends of whom I had lost all trace, a... Read full Story
hippocampus_171 2024-06-13 1,632 anal Amateur Masturbation Blowjob Sex Toys Mature small cock big ass Ass to Mouth cum in mouth
90%
Sissy Slut and Stepdads
Frank was pumping me hard and his huge cock seemed to have grown and become extra hard. I am so thrilled that way he enjoys fucking my ass with such passion. I would almost think he was in love with me if this relationship wasn't so bizarrey. It’s ironic that as a male I always get total humiliation... Read full Story
Regina10 2020-11-30 9,243 Crossdresser Bareback Creampie Fetish Blowjob blonde Big Cock Ladyboy Lingerie Guy Fucks Shemale Ass to Mouth double anal
100%
Camming Down the Rabbit Hole Ch. 07
Opening my eyes I struggled a little as the residual cum on my face from last night’s show hadn’t been fully wiped off, I felt the dry and crusty leftovers crinkle on my skin, but couldn’t help but smile to myself as I remembered how it had got there. The intensity of that orgasm had been on another... Read full Story
Dani_does_Dallas 2021-10-22 6,330 Stockings Small Tits Crossdresser Amateur Cumshot Masturbation Fetish Lingerie Sex Toys Homemade self sucking pov cum in mouth
100%
Santa Likes Shemales Femboys
Did you know Santa Clause is real....and he likes shemales femboys??!I It happened last Christmas Eve. I fell asleep watching the snow fall just outside my window. I was comfy under my layers of warm blankets I clutched tightly, in the black lace panties and red lingerie night dress or nighty I wear... Read full Story
Chrissy Tunnell 2022-12-01 3,649 Small Tits Crossdresser Amateur Bareback Fetish Big Cock Ladyboy Lingerie domination Guy Fucks Shemale Mature
50%
An alumni gathering like no other; 2/2
... I opened my eyes, sobered up from the alcohol and my lust. Simo had already left. I had to get ready for the party, and I had to do it like a man! BUT, slut that I am, to make my breasts more prominent under my dark purple tank top, I tightened a transparent strap around my waist. You never kno... Read full Story
hippocampus_171 2024-06-16 1,420 anal Amateur Creampie Blowjob Sex Toys Mature small cock big ass cum in mouth
91%
Mark's Surprise
Mark had just broken up with his steady girl, Diana 2 weeks before. He was finding it really hard to get over her. They had been dating for almost 2 years, and he was devastated when he caught her in "The Act" with 2 guys from the football team. He saw her car at the hotel, and pulled in t... Read full Story
shemale lover 2011-11-25 3,880 anal Creampie oral
100%
Florida TG Experience
I had known Jan from High School, we always had an attraction for each other but were dating someone else or married at the time. Jan had actually married a friend of mine and I was envious of course. She at that time had sandy blonde hair, and a body to die for. One evening we had them over for dr... Read full Story
Jon Paul 2018-08-13 10,969 Group Sex Big Tits Bareback Creampie Blowjob blonde Asian Ladyboy Shemale and Girl Guy Fucks Shemale Ass to Mouth cum in mouth double anal
100%
How I Became His Office Fucktoy
Until this job ended last year, every day at my lunch break I would service one of my many Daddies in his office in the building where I worked. He'd always slip me a few bucks, a $20 or even $50 afterwards, not as a payment for sex, but as a "tip" "for all the hard work you do here," he says. I wor... Read full Story
Chrissy Tunnell 2022-02-18 3,743 Crossdresser Amateur Fetish Blowjob Ladyboy domination Guy Fucks Shemale Mature cum in mouth
92%
Lola - chapter one
This is a fantasy but with a lot of inspiration from real life experience. More chapters to follow. Chapter 1 So now I knew, without a shadow of a doubt, what it was that caused this familiar smell in my house - and where it came from. When I got back home my laptop was lying open on the kitc... Read full Story
BellaBeau 2023-10-05 5,989 anal Amateur Cumshot Masturbation Bareback Blowjob Guy Fucks Shemale Frottage Homemade
100%
Big Surpise In Small Package
It was a Friday night and I was extremely horny and just my luck my girlfriend was out of town, but I wasn't horny for her I was craving cock. I knew I was bi for a long time and loved to have a nice hard cock to play with every once in awhile. So I decide to call my girlfriend to tell her I was goi... Read full Story
shemale lover 2012-06-11 4,305 anal Group Sex Cumshot Blowjob
50%
For The Sensual
For the sensual, description is everything. The collar. The collar is custom-made; one of two; her request. This particular one matches the corset. The corset—the "bustier." The collar. Literally, no choker here. She is disciplined. Her collars merely evoke ownership. She belongs. Sh... Read full Story
shemale lover 2012-11-14 3,232 anal kissing facefucking
97%
How I Met Alyssa
I groaned as the sun was shining onto my face. I turned around so I could get some more sleep, but I saw it was 9:22 am and I decided it was time to get up. I got out of bed and went to the bathroom of my little apartment to freshen up a bit. I looked at myself in the mirror and saw a 20 year o... Read full Story
shemale lover 2013-02-12 14,167 hardcore sucking Big Cock ass fucking big boobs