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1.
Used to describe someone who is wants to start an argueement or a fight. They pick on something, this is known as bridging up.

When asked "why are you bridging up?" can lighten a situation, and make it humourous. Therefore, avoid a fight.
Person 1: Why you bridging up for?
Person 2: Coz I know I can put it over you
or
Person 1: What the fuck do you want?
Person 2: Why you bridging up for?
by sweetfemale June 28, 2006