Usually meaning that a guy is in the closet about his homosexuality or bisexuality, and is deathly afraid of telling his peers or family, though he fucks guys secretly behind everyones back.

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.