Performing the two tasks of masterbating and pooping in one bathroom visit, possibly at the same exact time.
Greg: "Alright I'm gonna go mooperbate in the bathroom, be back in a few."
Rob: "OK."

Rob: "That guy is such an asshole."
Greg: "Yeah I'm gonna mooperbate on his face."
by Robby H. February 08, 2005

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