The definition of insanity is doing the same fucking thing, over and over again... expecting shit to change an inability to a) behave like a normal human being (this, in my definition, includes severe autism and other debilitating disorders) and b) to perceive the world as it truly is. So if you're severely hallucinating, you're temporarily insane -- unless you're aware of what's real and what's fake (like when under the influence of psychedelic drugs) because that means you can still behave normally.
I know this thread isn't about serious answers anymore, but there you go.
Well this thread was going to tell my funny story of the year.
....Yeah...My final exam..it was a massacre. No one left alive. (Except me to tell the story and to warn the others)
Insanity is the true norm, those who embrace it are the real sane ones. >:3
By the ever talented Lillian Thorne!
Behaving or thinking in a way that society finds unacceptable and is seen in large enough numbers to be deemed a disorder rather than bad. The larger number of people thinking in this way compared to an individual thinking differently allows them to be studied to a degree where we understand them enough to rationalize their actions as not their fault, their flawed thinking is what leads them to it becomes the rationale. The emphasis on being considered flawed not different.
That's my opinion on how labels of insanity are developed and before anyone says so I am not saying mental illnesses don't exist only characterizing how society develops technical labels for them.