Also known as "kill books" . Really nasty bloody brain splattered photographs of dead Iraqis or Afghanis taken by grunts after the shooting stops. A lot of these are traded like baseball cards, and often wind up in the hands of pogues and fobbits who use them to talk shit back in the world "look how bad-ass I was"

A phrase to describe someone who is cognitively degenerating. Synonym of "going off the deep end". Can have varying degrees of severity.

Reference to the song "Hey You" by Pink Floyd. The line "and the worms ate into his brain" makes no sense in an otherwise linear and literal narration throughout the lyrics.