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1. When a person appears to have two separate IQs, one at each extreme of the spectrum.

2. When someone can sometimes be a total dumbass, and other times be a complete genius.
Guy 1: You know that guy, Nick?
Guy 2: Yeah, he can sometimes be a total nerd and other times be a complete dumbass.
Guy 1: Yeah, he's got quite a biq.
by Eli E. January 16, 2010
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Jul 19 Word of the Day
the art of remembering an arousing occurrence or some porn you watched while masturbating, often handy if you have no porn or your in the shower
dude i had the best memory wank the other night, i was thinking about that time I walked in on your mum in the shower
by fonzatron2000 April 28, 2007
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2
BIQ is short for "Beat It Queer". It is used to dismiss any loser from your presence.
by Red Bull Rehab February 25, 2016
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