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When you go at least a week without shaving or combing your hair. You dress completely like Shit and look just out right awful. Then just before a big get together or meeting up with a girl you like, BAM!! You clean up real nice. The contrast from before and after makes you seem so much nicer.
John: Dude, you look like shit, You goin to that party lookin like that tonight?
Mike: Nah man, I'm goin for The BAM Effect
by TreeBobJoe November 08, 2009
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the effect one gets when, say, a hot girl turns to you, and BAM! he falls in love with you.
Katherine turned to me the other day and it was like BAM! Total the BAM effect moment.
by scandalousnerd September 08, 2011
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