An offensive term for a homosexual, generally male. Refers to the act of engaging in anal sex, a.k.a. buttstuffing.
Joe - That buttstuffer keeps touching me! What the hell should I do?
Tommy - Break his cock-sucking face, man.
The stuff your parents should've stuck too.
Dammit Jimmy, your parents should of stuck to Buttstuff!
When someone does anything with the butt sexually
hey man we are not doing buttstuff today...