I've been working around my mate's house for the last couple of evenings (im a plumber) doing some things for him. When i got there last night he said "im really sorry but we've got to pop out and do something for the wife's mother"."If you need anything, Stacey (his 18 year old daughter)is in her room" I got on with the job id gone around to do, fitting in a new toilet system, and had been working for about an hour when Stacey appeared behind me. "Are you going to be long Dave, im bursting for a wee" she said. Now the toilet was out and there was no way on earth that that she was pissing in that toilet. "Im sorry stacey, but i'll be about another half an hour or so yet". "I cant wait that long" she said and promptly dropped her jeans around her ankles, pulled her thong down and sat over the edge of the bath and started peeing. "Im sorry, i really have to go" she said. I didnt know where to look. Here i was with my mates daughter who's nappy id changed when she was a baby, watching her piss into the bath. "Surely you've seen someone piss before Dave?" said stacey. "Of course i have Stacey, just not my best mates daughter" i replied. When she'd finished she pulled her tiny little red thong back up and just stood there in front of me. "Oops, i forgot to wipe my pussy properly and know the front of my knickers are all wet" "have a feel Dave" she said. She grabbed my hand and rubbed it along the front of her thong. "See, its all wet Dave" she said. I was gobsmacked. "Whats the matter Dave, dont you like the feel of my pussy" I didnt know what the fuck she was thinking of. Here's me a 40 year old beer bellied bloke, being seduced by a very sexy 18 year old. I began thinking of my mate and his wife who id known for years, and what they'd do if they caught Stacey amd myself like this. Then the cock started rising and that was my cue. I pushed Stacey up against the bathroom wall, shoved my tongue down her throat, pulled her thong to the side and put my finger straight up her tight young snatch. Boy was she wet. Even with only one finger up her it was like being held in a vice. I began sucking on her little tits and biting her bullet sized nipples. She was moaning and groaning when i put another finger in her, and saying things like "bite my nipples hard, finger me roughly". Stacey pulled away from me and i thought oh shit she's realised what she's doing, but no, she dropped to her knees and dragged my cock from my boxers and began licking my helmet. I was in heaven. She told me that she'd never sucked cock before and was she doing it ok. I told her she doing it just perfect, and pushed her head down on it a bit more. When i felt myself nearing the point of no return i lifted her off her knees, picked her up around the waist and slid her ever so slowly onto my throbbing cock. I haven't got the biggest dick in the world but boy did she quiver and moan as it slipped up her snatch. It had been years since id felt a fanny as tight as this around my cock. I fucked her nice and slowly like this for a while then lifted her off and leant her over the hallway bannisters and slipped back into her from behind and then fucked her like there was no tomorrow. There was pussy juice gushing from her cunt and running down her legs. I kept wiping my hand in the juice and putting my fingers in her mouth. She was loving it. She had the makings of a dirty little whore. I told her that i was gonna cum and she said said she wanted to taste some spunk. I pulled my cock out of her soaking cunt and pushed it into her young mouth. She licked all her own juice of it and then sucked it like it was a lollipop. When i started to cum she swallowed the lot hungrily. I felt like i was never going to stop shooting. Stacey got up off her knees and said "Thanks Dave, that felt like a proper fucking, not like the one i normally get from my boyfriend" She took her little red thong off and put it in my hand. "Keep that to remember me". I dont think i'll be forgetting Stacey in a hurry. My mate and his mrs came back a little while later and offered me some cash for the work id done. I didnt have the heart to say his daughter had more than paid for it. I just smiled and said " its on me mate". That little red thong smelt so good. Of nice young pussy. Thanks Stacey.