So I was playing the Halo PC demo earlier and was beating the crap out of this guy. After every game he'd sit there and whine about how I was "cheating" because I was using the Banshee. I told him if the developers didn't want them used, they wouldn't have created them.

This goes on for a few games till finally he starts swearing at me. So I start saying the same things back just to get under his skin. Out of no where he says

"What are you going to do to me?"

"You fat nerd"

Now this person doesn't know me at all and I am growing tired of his swears so I replied:

"I'm gonna sit on you!" "Rawr!"

Even the room host said "OMG best comeback ever" The wuss left the room, never to come back in.