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It is an acronym used by discerning males when their girl brings along an ugly girlfriend to ruin otherwise great plans.

usually causing one of your friends to "take one for the team" .
Yo son why did she have to hit us with the bugtrap.
Damn here comes the bugtrap.
Not again...mafucca you gettin' the bugtrap.
by benni blanco April 02, 2009
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