Often used to describe a person who is severely uncultured due to several retardations in the hindbrain. Also used to describe a person who is a douche or a retard.

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.