What you say in Portuguese when someone does shit. If translated literally it means something like "Fuck you Simon".
Simão was a famous Portuguese student of the renowned NOVA University of Lisbon that nobody ever understood how he managed to enter to such a reputed institution.

In the meanwhile, the expression has spread nationally and is now used in a wide range of contexts.

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.