(Noun-Verb) - To run directly into your offensive lineman's rear end so violently that it in turn causes the quarterback to misplace the pigskin out of his hands and onto the ground ultimately causing a fumble.
Mark Sanchez is the pioneer of the Buttfumble.
by KRHimself December 30, 2012
Get the mug
Get a Buttfumble mug for your mom Sarah.