Sniper Oblivion
Term used to describe snipers on Modern Warfare 2 completely unaware of nearby enemies, usually due to the fact that they are extremely hardscoping and unable to see peripherals. Sniper Oblivion is usually noticed by other team mates in Search and Destroy after one is knifed and the sniper offers no support.
Bad Kid 1: (Enters death lobby) DAMMIT that Marathon/Lightweight douchebag knifed me again, I hope Jess gets him.
Jess: (enters death lobby) aww man. Where'd he come from?
Bad Kid 2: *sighs* Sniper Oblivion dude...
Jess: (enters death lobby) aww man. Where'd he come from?
Bad Kid 2: *sighs* Sniper Oblivion dude...