1. A shortened version of the word "barbecue"
2. An Internet slang term for things such as Be Back, Queers, Better be Quick, and Bitch Be Quiet, among other terms.
1. Let's go to that BBQ over at Lenny's house!
2. Phil: The game's starting. BBQ.
Annoying Person: *starts raving and whining, generally pissing everyone off*
Phil: BBQ, Annoying Person. Uh oh, the missus is calling. BBQ.