Once I fell asleep on the floor of a nightclub toilet with my trousers and underwear by my ankles, woke up due to a guard unlocking the door from the outside, opening the door to the stall first seeing my junk and then my face going "Oh for fuck's sake...", closing the door and then shouting through the door: "Get dressed and come out, it's time for you to go home". Why I had my trousers and underwear by my ankles? I was taking a shit and suddenly had a desperate urge to throw up, and then I passed out.
Overall it was a good night, brushed myself off and met with my friends at a burger joint before going home. If I remember correctly I wasn't particularly hungover the following day.