A person whom isn't too bothered about their appearance or the odour they produce. In other words they are a complete waste of space and pass their vileness onto the unsuspecting General Public

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.