1 definition by Grappler

verb. 1.To unethically screw over another person or team, usually done during a sporting event and usually done during a wrestling match.
2. To gain an advantage by manipulating the system.
3. To get fucked over.
During a wrestling match, Johnny puts in a full nelson on Ryan and the match is stopped momentarily. Ryan's coach jumps up and tells him to act like he is hurt so they will win. He has pulled a Birt.

Sentence: a. "If you are not good enough to win, Birt!"
b."Oh shit coach, he's going to Birt us!"
c.
by Grappler March 21, 2007
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