Damiasanity Share definition Flag Damiasanity is the name for a type of insanity that is spread specifically by people named Damian. This is spread just like cooties, rapidly. “Good lord, did you see Damian today?”“Yeah. His damiasanity is showing.” Damiasanity by natxxlem December 8, 2022 Get the Damiasanity mug.