Once when I was a teenager.

Allan was the first guy to,cum inside me. He wasn't the one who took my cherry, but his was the first cum that trickled out of me for hours afterwards.  Looking back, we didn't have a very refined sex life. He couldn't wait to get it up me, and I couldn't wait for him to put it there. He wasn't interested in watching me masturbate, mainly because he couldn't hold it in. I tried making him watch once, and he came in his pants.  So, this particular time, I told him I wanted to watch him. I told him I,wouldn't get undressed, and I wouldn't even open my legs and let him look at my knickers. I just wanted to watch him wank. Allan fussed around, because he really wanted to fuck me, but I told him that if he did this, I would make it worth his while. So, he stripped naked, (almost making me jump on him there and then) and started rubbing his cock. Although he worked at it, he wasn't really getting hard, so I told him that he should go to the bathroom, and take some of my knickers from the hamper. When he came back, he had something balled up in his left hand, and I could just see the white clothed of a pair of panties. I could clearly see the girl cum stains and he started to sniff at them. That did the trick. He was hard as fuck in seconds, with pre cum appearing soon after. There was a lot,of him muttering "Fuck, Jayney, you smell great.....I love your cunt.....I love your smell....I can smell pee too and that's hot as well.....oh fuck......" As I could see he was going to cum soon, I told him to cum right into the crotch, right where my cunt had been. He arched his back and fluffed out the panties in front of him..... THEY WERE MY SISTERS, With a deep, satisfied groan, he unloaded his cum right into the crotch of my kid sisters panties.  When he had calmed down, I told him that he had all but fucked my 14 year old sister, because they were her knickers! That made Allan instantly hard again. I went to the bathroom, got,another pair of her knickers, and put them on. I then had Allan fuck me, but made him call me her name. I even had him gently pull the knickers to,one side and enter me slowly, as if it was my first time. Hell, I even squeaked as he broke my pretend hymen. I considered getting Claire to,fuck Allan, mainly because at that time, if anything, she was hornier  than I was. While she liked the idea of him jacking off into her knickers, she wasn't up for  him fucking her. Claire is 100% straight, and I think she thought that she would end up tasting me, either directly, or on Allan's cock. Pity, I wouldn't have minded. (I used to masturbate thinking about her masturbating...if that makes any sense.) So, Allan and I had a few months where we would play with Claire's knickers from time to time, and we would leave the cum filled panties under her pillow. I know she masturbated with them because she told me, but she wouldn't give me any details. Fuck....this little flash back has really made me horny.  Next contribution will be what happened with Sarah on the stopover.