100% true story, unfortunately
i was at a party with a bunch of people and was talking/hanging out with this 1 girl who had 3-4 drinks before deciding that she was tired and wanted to crash out on the couch. 5-10 mins. later, my "friend" who's place we were partying at said he was going to bed since he had to work the next morning. shortly after that, a friend of that girl pretty much drug her off of the couch and made her keep partying/hanging out and all that since she hadn't had all that much to drink
fast forward a couple hours later, and everyone else has left except for me, that girl, and the guy who was asleep in his room. we were hanging out and talking, then we flirted a bit, then next thing i know she's sitting in my lap and pulling my belt off. then we take things back to the couch, just in time for that other guy to wake up to go to work and walk in on us. of course that made shit akward as fuck, so we just stopped fucking around and both went to sleep.
turns out that later on, she doesn't remember any of the shit that happened that night, and that guy assumes that she had never gotten up off the couch after laying down, and basically tells her he walked in on me raping her. of course i found out later from this guy's ex-girlfriend that he had a total and creepy obsession with this girl. she also told me that she knew several other girls who had hung out and partied over there around the same time who had woken up missing various articles of clothing and not remembered what happened.
so...as far as i could tell, this guy slipped some shit into this girl's drink, thinking he'd hook up with her while she was all fucked up. then when she layed down on the couch he figured his chances were shot, so he just went to bed. then he walked in on me fucking this girl that he'd been wanting to get with for the last 7-8 years, got jealous as fuck about it, and planted the idea in her head that i raped her, knowing full well that she was drugged and didn't remember anything that had happened. thankfully she never pressed charges or anything, but word got around and i definitely looked like some sort of creepy asshole to a lot of people i knew at the time, when i thought that all i was doing was banging some girl who was just as drunk as me, and who made the 1st move.