Mark was in his last year of school, he was a good looking lad but never really had the confidence around girls to ask one out so had never been with one. One day towards the end of dinnertime he needed the toilet. When he walked in the bell for next lesson went so everyone dashed out as it was banned to be in the toilet during lessons, "fuck it" he thought "why shouldn't I", and walked into one of the cubicals. He'd just finished and was about to leave the cubical when he heard the door open. "It's OK it'll just be a student" he thought, however he then heard the door get locked and a bit of movement. "Oh shit it's one of the cleaners, I hope it's not Mrs Green" Mark waited in terror sat on his cubical and listened to the toilets get clean, suddenly the door shook, "Who's in there" a womens voice asked. Mark stood up and opened the door. Mark prayed it wasn't Mrs Green and as the door opened a woman stood there looking furious, sure enough it was Mrs Green. "I'm so sorry Mrs Green, I wont do it again" Mark said nerviously. The face suddenly changed on Mrs Greens face when she saw who it was "You know you shouldn't be in here" She said in a sweet, sweet voice "but as it's you I'll let you off", Mark immediatly set off to the door but a voice from behind him said "well arn't you going to thank me then", Mark turned round and said "Thank you Mrs Green". "Thats not the sort of thank you I was after, and please call me Kelly" "What do you mean, Kelly" Mark asked "Kiss me" she replied. Kelly was an absolute stunner, she was a part time cleaner who did it for some spare cash while she was at university. She had black hair and was about 5' 6". Mark was nervious but stepped closer to her. Kelly stepped forward and kissed him "wow" said Mark "that was great", "I haven't finished with you yet came the reply. Kelly reached behind her back and undid the zip to her cleaners uniform. She slipped it down slowly until she stood the with just bra and thong on. Mark could now see why every boy in St. Wilfords obsessed about her. Her 32DD breasts were out of this world, Her skin looked as smooth as silk and she had a perfect body. "Now come here" said Kelly, Mark did this and she took his hands and started touching her breasts with them. "Fuck me and fuck me now" Kelly demanded. Mark took his school uniform off until he stood the with just his underpants on, Kelly knelt down in front of him and put her soft hands on his body. As Kelly eased Mark's underpants off she smiled with delight as she saw his penis. Mark had an 8.5" cock, and it trully was a beutiful creation. "Have you ever used this on a girl" Kelly asked "No" came the reply, "Well I'll show you how it should be done then". Kelly took his penis in her hand and eased it into her mouth. Mark's cock quickly became hard and this made Kelly extatic. "Oh I just love this cock" she muttered before easing her soft lips about 5" of the way down. Kelly lifted her hand and started jerking him off while still sucking him off. With her other hand she was playong with his balls, "do you like that" Kelly asked, "Oh yes i'm gonna shoot everywhere in a minuit" Mark replied "no don't theres still more" Kelly lied back and said "Now, take my thong off" Mark got down on the floor and rolled her thong down to reveal a little black triangle of hair, "That is beutiful" Mark said. "Oh, do you think so? lick it" Kelly demanded. Mark finished taking her thong off and plunged his head between her legs. Kelly had the greatest pussy you could ever imagine, all shaved and tight. Mark loved the taste and carried on licking her lips and plunging in every now and again. "Excellent, now use a finger as well" Kelly moaned. Mark slotted his finger into Kelly's clit and continued to lick. Before long Kelly screamed out and her pussy flowed like Mark couldn't belive. He licked most of the juices off her before Kelly sat up and said "right now do that with your dick" Mark edged up a little closed and grabbed his rock hard cock in his hand. He guided it into her clit "wow this is a tight fit" he proclaimed. Mark thrust deeply inside Kelly and every movement made Kelly groan with pleasure "I had know idea you'd be this big, wow it's great, its the biggest cock i've ever had"she said, Mark loved thrustin his big dick into her beutifully shaved pussy. Kelly wrapped her arms round Mark and dug her fingernails into his back, Mark continued getting deeper and deeper penetration until his whole cock was inside her "how am I doing" he asked "Fucking great, faster, faster!" she screamed out. Mark fucked her as fast as he could continuing with his deep penetration Kelly screamed out load as she orgasmed again, Mark said "I'm gonna come, I'm gonna come!" Kelly replied with "No, please come in my mouth I wanna taste you, please" Mark duely pulled his cock out and knelt up infront of Kelly. Kelly immediatly got up and once again began brought her hand to his cock massaging the head, before sliding her hand to the bottom of Mark's shaft. Kelly moved her head closer and opened her mouth expectingly. Kelly wrapped her lips round Mark's thick shaft and began pulling his cock faster and faster with her hand while sucking his head with her mouth. Kelly moved her other hand and began to caress Mark's balls, "Oh, that feels great" said Mark. Kelly continue until Mark's groans became loader and loader until eventually he was ready to come. "Oh, I'm ready, I'm gonna come" Mark moaned. Kelly suddenly plunged her lips further down Mark's cock anticipating his juices and wasn't dissapointed. With an almighty groan Mark fired his load deep into Kelly's mouth and could feel Kelly struggling to swallow it all. As Kelly carried on pulling with her hand Mark came more and more, and Kelly continued trying to swallow the lot. When Mark had finished Kelly continued licking Mark's cock clean until it was soft and limp. Kelly stood up and thanked Mark. "Now that was the sort of thank you I was after" The school bell suddenly went, they had been in there for one and a half hours! They both rushed to get their clothes on and unlock the door. Over the course of the remainder of the year Mark never went to double maths on Thursday afternoon again, he had much better the to learn from his new teacher.