When you abduct a couple people from Walmart, take them to a failed subdivision establishment, throw them in an empty pool with one steak knife, and force them to fight to the death.

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.