buttfuck /ˈbʌtfʌk/noun 1verb 1forms 3 noun1 •(slang, vulgar) An act of anal intercourse. verb1 •(slang, vulgar) To perform an act of anal intercourse.Asshole? I'm not the one who just got butt-fucked on national TV, Dwayne. — 1988 formsbuttfucked · buttfucking · buttfucks