so this is the truth, whether it seems so or not...
for a long time i liked to steal my sisters panties and wear them around when no one was home. it first started as a dare and then i just kept doing it for fun. when she moved away obviously i couldn't do it as often, so sometimes when she was home but out of the house i would wear a thong or something for a bit.
well now i'm 23 and she's 28 and it had been about 5 years since i had touched her panties let alone worn them. well i was visiting her where she lived and we started drinking and watching a tv show on dvd. i drank more than she did because, well, i like to. some time passes and it's brutally hot as she has no ac so i was already just sitting in my underwear. i complained of the heat and she joked i should borrow her underwear since there was less material. i was like "yeah! oh wait just kidding..." so when she got up to go to the bathroom i used my liquid courage to go into her bedroom and take out the thong that best looked like it would fit. on it went and i moseyed back to the couch. when she came out of the bathroom she nearly fell over laughing. i had always dreamed of her being mad, but she wasn't, she just thought it was absolutely hilarious. later when i was drunker i said "sorry i shouldn't have done that" and took off the thong to give it back. yeah, just took it off and stood there naked inviting more laughter (not sure if it was at my, well, less than huge penis or the whole situation). eventually we went to bed.
in the morning she asked if i needed to borrow underwear and we had a good laugh and i asked her not to mention this to anyone. hope she doesn't.