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?
Bridging up, is a term used to call out someone who seems to be picking a fight, or stand off-ish though It's generally only used in humorous situations, when it hasn't exactly escalated to that point of heated exchange but generally means - Why are you sticking your chest out/ picking a fight?
(noun) the act of removing a person from the "friend-zone" in recognition of his/her possible relationship value. This is the transfer of "just friends"-people who are excluded from emotional and sexual interest, despite personality and physical attractiveness- into the status of "possibilities", or potential partners. Happens very often in movies and cliche stories, but very sparsely in life. (inf) to bridge the Friendzone Gap.
Ramie: Do you think she's pretty?
Rupert: Sure, she's quite pretty- and she's one of the most chill people I know.
Ramie: But you don't like her?
Rupert: No, it's purely platonic- I think not of her that way.