I am. HandsUp.

Short police slang statement. The accused answering in a short 'matter of fast' tone, indicating decisiveness attached to the term 'HandsUp', adding a command for the criminal to follow.

Usually used in action movies when the protagonist captures the criminal or in real life when police give commands to the criminal in pursuit.

Police: Come with me now or else you'll be charged with more!

Criminal: You really think you're gonna be the one to take me in dawg??

Police: I'm done. HandsUp.

Criminal: Oh really?

Police: I am. HandsUp.

Criminal: Yes sir.