Phantom masturbation as you see a lot of people use nowadays. The participant acts as if they are masturbating and sometimes concludes with a fake ejaculation. It is usually used as sarcasm or a way to show displeasure. The word is a play on the boxing technique of shadowboxing.

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.