Similar to 'Monkey Face', when a male shaves his genitals, ejaculates onto his partners face and throws his pubic hair onto the woman's/man's face. However when partaking in a 'Monkey Bum Face', the male shaves the hair from his bum instead of his genitals.
When finished shout "Monkey Bum Face" whilst doing jazz hands.
by The_Morganator August 10, 2009
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A Fucking Bum face is a insult aimed at people that deserve Testicular Neutering
Bob: That fucking Mister Garbutt gave me a After School Detention
Loo: What a fucking bum face
by AKewlDefiner October 19, 2023
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