An expression used on gears of war by pissed of gamer to describe a guy that is skilled enough to maneuver their shots and get close enough to chainsaw them.
noob who keeps getting chainsawed: waaahh! chainsaw noob keeps killing me!! Stop it or I'll give you a bad report!
The so called chainsaw noob: ermm.. First, you can't report me for killing you. Second I'll stop when you manage to kill me