2 occasions, none as serious as the top comments so this will probably get buried. They're on-running jokes in our friends group and tbh I'm not really traumatized from it so I don't mind too much, it just gets annoying.

1st Time: I blacked out coming home from the bar and woke up naked with a naked girl in my room. It was a girl I was helping get over her ex (she was kinda crazy so I wasn't about it). That made her mad. She casually claimed like a month later to some mutual friends I raped her.

2nd Time: Different girl. Same scenario pretty much. Blacked out at a bar across the stream and woke up in her living room and her roommate walking out the door. My dick was still like in her pussy spooning on the couch.