someone special, very cheeky and naughty. he's a good boy with a bad mouth. he says what he wants and does not care what people think. he will fight for what he wants. he's so masculine, good in self-defense, and he's a faithful person.
and of course, he's good looking and macho. I'm in love with him

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.