A form of trash talk usually associated with the phrase what are you doing. I cant remember who it was, but in that Halo 3MLG trashtalking video, some guy asks some BK's what they are doing. Im not going to lie, it was hilarious.
*Naded with the nade headshot*
"WHAT ARE YOU DOING!!!???"
*Naded then spins around to no-scope Legit in the face*
"OH MY GOD!! WHY DO YOU PLAY THIS GAME!!!!!??!?!?!!"