When a male takes a large drink of vodka/absinthe and the has another male place their testicles in his mouth and proceeds to gargle the alcohol whilst thrashing his tongue around his mouth erratically.

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.