when one goes down on a girl and she surprise squirts
you in the face.
I went down on Cait the other night and holy shit she shotgunned me!
When engaging in anal with a woman, the woman craps diarrhea on your penis, effectively spraying it on and around your penis, usually in the pubic region.
Man: Aww yeah..
Woman: Oh shit..
Man: Wha- ohgodohgodohgod u just shotgunned me?!?
Man: Sorry?!?! Get the fuck out!
The act of simultaneously jerking off a man and putting a phallic up his anus when kneeling in front.
Thankfully Californication clarified what being shotgunned was before I took the art student up on her offer.
Getting owned by a shotgun.
I just shotgunned you!