Combining Christmas, Hanukkah, and Kwanza into a single term. These are the three holidays typically mentioned around this time so it's easier to say them all at once and not be some PC douchebag and say "Happy Holidays".

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.