Not Fucking Safe For Fucking Work. A way of warning people that the online content you're sharing isn't something they'd want their boss to catch them reading/watching/listening to. Like NSFW but much worse.

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.