This is performed whilst in the doggy style sexual position. At the point of climax the person from behind must apply a swift punch to the back of the partners head, thus causing a tightening of the body as passing out & heightening sexual gratification.

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.