On the farm, when a cow is taking a shit and, in the process, Coughs causing an explosion of shit to hurl from its ass at light speed. Most often a witness to this even will tend to use the phrase to describe the speed of an object or vehicle.

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.