Providing fellatio in order to ingratiate yourself to one or more people and get something you want in return. While this can literally occur, often it is meant euphemistically.

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.