An Asshole in a ball cap. A miserable unhappy jerk who is less than pleasant to his girlfriend...wears ball cap to hide the big donkey head that is attached to his fat human body.

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.