1. a piece of bacon or pork inserted into lean meat prior to cooking. (Also spelt "lardon")

2. a large breast, esp. one belonging to a thin or muscular woman. (Usually plural.)

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.