It's from a comic called Ctrl+Alt+Del
New Perks for Modern Warfare 2 (a sequel to a WW2 first-person shooter called "Call of Duty." The sequel is based on near-future operations surrounding the concept of nuclear terrorism, based on the Iraq War and the ongoing conflict in Russia's Chechnya and Georgia.)
First panel is:
a picture of a helmet-less soldier with an M16 screaming in pain while surprised while there was a knife in his behind by someone below him.
Caption: None for me, thanks-- Posthomously stab players at attempt to teabag you.
*Teabagging in an online game is the act of humping someone's corpse... in real life, that would be sitting on someone's face, rubbing your crotch in their face.
Second panel is a picture of Robo-cop with a haze of smoke or dust behind him.
Caption: Murphy's Law-- After a kill streak of 30, become Robo-Cop (based on "invincibility" idea from the old Doom games)
Third panel is captioned "From the West: Call in a Spotter." It's a picture of Kanye West in black t-shirt, and shades holding a mic, kneeling beside a sniper with a M24 rifle. Both people are behind a destroyed wall.
There is a speech-bubble from Kanye saying "Yo sniper, I respect your decision, imma gonna let you finish, , but that dude over there is the best target of all time! Of all time!"