*Shoots a zombie in the head*
That was a no-brainer.
*Cuts a dude in half*
What happened to him?
He had to split.
*Shoots someone through the eye*
I guess he didn't see it coming...
*Crushes someone under something*
Pressure getting to you? (Yeah that one was stolen from Arnold's outtakes on Commando. I thought I'd reappropriate it).
Then there is my ultimate one, which was part of Baby Teas original thread "You own personal one-liners" (which I'd post a link to but I'm severely lazy today):
*Throws a billiards ball at a guy, hitting him in the head and killing him, while his unarmed partner (also my enemy) looks on*
Looks like there's a solid advantage now.