Murbah Fist Share definition Flag When someone is taking a shit and you fist them to force the excrement back up into their sphincter Person 1: Ugh bro I'm boutta shit my pants but there's no toilet around.. Person 2: Hold on let me give you a Murbah Fist rq Murbah Fist by gloplord August 22, 2023 Get the Murbah Fist mug.