Akin to flicking the bean a term for manual stimulation of the female genitalia specifically the hood over the clitoris. Either as part of female masturbation or an act carried out by an obliging partner

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.