Used to describe an activity or situation that is crazy or outrageous.
John: I had nine cups of coffee yesterday. It was insanity on a stick.
Mike: If you think that's insanity on a stick, you should hear about my day. I nearly got eaten by a hyena, and then I got home and found out my cat had been shot. It was insanity on a stick.
John and Mike simultaneously: Insanity on a stick!