When you go swimming in freezing cold water, and in return your balls head up north in order to stay warm and protect the family jewels. Sometimes they go so far up north they even seem to disappear for awhile, which cause a great deal of discomfort.

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.