I have known this girl from being very young, I'm talking like pre-school, there has always been a bit of sexual tension between us, the odd kiss, truth or dare, kids stuff really.
Anyway a few years ago I was round at her house we were sat in her room (she's not the neatest of people) there were clothes all over the floor. At first I didn't take much notice but when she went off to get something from the kitchen and go to the bathroom I had a snoop around (remembering our truth or dare games and I'll show you mine if you show me yours games) I got a hard on, what I then noticed was that there were dirty panties on the floor (maybe 10 pairs scattered about), I picked up a pair a grey thong with a cartoon dog on the front. I had a sniff (I've always liked dirty panties), these were fresh the crotch still wet from where her pussy had been rubbing it, by this time my dick was bursting, I gave the crotch a quick lick, umm tasted nice, sweet. I put them in my pocket and carried on as normal when she got back, I finished what I had to do there and left.
When I got back I was dying to jack off into her dirty panties, I went straight to my room and got my dick out, sniffing the panties I rubbed my cock up and down, then I wrapped the thong round my dick and jacked myself off using her dirty underwear. After about five minutes my legs tensed and ball sack tightened, I shot seven long ropes on to my chest, panties still round my dick I kept going till I was spent, by this time they were covered in my warm cum. I put them in the bottom draw of my desk and forgot about them for a bit.
A few weeks later she came round to mine to do a school project (can't remember what it was), she needed a ruler so I pointed over to my bottom desk drawer not realising that is where I stashed her dirty cum soaked panties, she opened the drawer and gasped. Then it hit me, that's where I had hidden her panties. Shit, either she didn't see them or she pretended she didn't because she found the ruler and closed the drawer.
I used them many more times for jacking into, she never did tell me whether she had found them or not, but even if she did she didn't say anything.