David Cameron's idea to transform his party from an uncaring, money driven party into an uncaring, money driven party whose dirty work is carried out by unpaid serfs.

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.