Accosted by a stranger and then anally raped.
He was coming home from the party when two people jumped out of the bushes and buttmugged him.
by wankpanda November 17, 2008
1 more definition
Unsolicited penis to butt touching
I was butt-mugged by this guy squeezing by me on the subway...it was weird.
by JSG0031 June 02, 2010