A Tashen is a person who is sweet if you get to know him, if he likes you he won't tell you but he will be mean to you and make your life a living hell. But that just a way to show you that he likes you. He will get mad if you go with someone else other than him. He is a huge jerk though even if your his friend. He isn't really good with basic human conversations. But he is your friend after all

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.