a 'tard slap is a term used to describe the motion of slapping one's own upper chest with the side of the opposite hand. it is used when mocking retarded people or when accentuating the fact that one did something retarded. often accompanied by a "huh huh huh" type of fake laugh.

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.