Gagein-it
You kill someone, you're drained, you're happy, and some guy who was just sitting there decides to pop you because you were too busy being a smug winner.
I killed a guy, I was like, 'I'm the king!', and then someone came out of nowhere and killed me.
I killed a guy and I was showing off and then some guy snuck up and shot me.
I just killed someone and I was so full of myself I didn't see the guy behind me.