A response to discovering that Vanilla Ice, Tammy Fay Baker, and Ron Jeremy are among those to appear together on the Surreal Life tv reality show: "WTFBBQ?!"
The expression started in Halo I, during Multiplayer. A character named BBQ ran sometimes got bored and decided to Rocket his own teammates, resulting in a team kill. Their expression was WTF BBQ? Remove the question mark and the space, WTFBBQ.
Guy1: LOLOLOLOLOLOL -Kills someone-
BBQ: -Rockets him-
Guy1: WTF BBQ? We're on the same team
BBQ: -Rockets him again-
Guy1: WTFBBQ, you're banned -Kicks-
When someone is surprised, they will say this. It is used by mostly teens who have lack of grasping of maturity, much like the word emo. You will rarely hear, nor see this used by an adult, due to the fact this is a word for kids.