one time my boyfriend got involved in a drunken shoving match outside a bar (one time? ha!). anyway a girlfriend of one of the other guys cleverly and helpfully decided to mace everyone involved. silly bitch. so my boyfriend gets home all pissed off and piss drunk and passes out. sleeps all day the next day, i go off to work, get home. he's just got out of the shower and is telling me the story. we both agree it sucks but it's funny. and then we decide to have sex.....
somewhere along the line, i wish someone had told either of us that MACE DOES NOT WASH OFF. if it's on your face and you shower, it just runs all over your body. yes, ALL OVER.
so. since i had my period at the time we opted for anal sex. about 30 seconds later i am running around the house screaming "O GOD IT BURNS O GOD O GOD AAAAAAAAAAHHHHHHH!!!!!!" at which point i ran into the kitchen and started trying to stick ice cubes in my ass. the rest of the evening was spent with horriffic expolsive diarrhea. then it was off to the ER where i got to explain the tale of the ass-macing, in spanish no less. (we were living in spain) and boy did they think it was funny.
obviously it was not especially funny to ME at the time (my BF was laughing at the ice cube part. bastard.) it is seriously fucking funny now. he thinks the moral of the story is "that's what you get for not giving me head first" and i am reluctantly forced to agree...
anyone else have a ridiculous or horrible sex experience that is really really funny in retrospect?

incidentally the phrase i fucking hate beyond all others is "it's the feel-good movie of the year!" people who can say that and mean it should have their tounges cut out.