The act of bending your girlfriend over a table, bed, or couch naked, then standing back 10-15 feet and running at her full force with an erected penis, trying to get it into either her anus or vagina.
Doctor: So, John, how'd you break your penis?

John: Well, I was doing the Buffalo Trot to my girlfriend and missed.
by Archer50 November 3, 2007
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