When a someone puts one cock infront of each eye (like binoculars) and pulls their foreskins over the back of their eyes, then he/she grabs the shafts and jerks them off .

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.