When you're having a conversation with someone and the insanity falls likerain; Typically, a situation where you are on the receiving end of someone "going off" about issues that you can't do anything about, typically involving an unstable person who had difficulty modulating the level, and octave, of their voice.
Said to a friend, regarding a conversation where someone has just incoherently ranted for a long period of time and in multiple octaves about ideas that had no logical connection:
The place where you send people with _issues_. Usually inhabited by those with an odd compulsion to worship cylindrical objects in blatent defiance of the glory of the god of swords.