Pleinarians are terrestrial beings commonly found in many parts of the world painting on location. Some have been known to paint in studios as well, but the majority paint in the field directly from life.

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.