What you call someone when you shoot a guy who has last stand in Call of Duty and while that guy is in last stand they come up and kill the guy taking your rightfull kill.
Sniper:(Deep Breath) BA-BAM!!
(guy goes into last stand, sniper lines up the finishing shot)
Kill Thief: Haha im a douchebag,(BAM +10), look how good i am feeding off of wounded opponents,
Sniper: *Sigh..* FUCKING KILL THIEF!!