1. Literally expelling urine from one's ass after having the urine injected into the anus during the act of a pistol star.
2. A specific type of diarrhea, wherein the contents of one's ass is expelled in a liquified, piss-like manner.
Paul was buttpissing all night after the girls all gave him a good pistol star.
Grant had to seriously buttpiss the morning after Joey gave him a pistol star for his birthday.
21👍 4👎
The act of urinating into an anus.
I thought he was just into anal, but then he pistol starred me so hard I was buttpissing all night.
Get the turkey baster! Paul wants the girls to pistol star him again.
23👍 3👎