When you finger a girl on her period and the whip your fingers on her face to make a design, then stick you finger in her ass and whip it in her face to make a design, then jizz on her face

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.