Ow you should try that by the way it is more fun then it sounds...
When you are alone at you'r school and all you want to do is scream down the hallway running as fast as possible..
Not being able to tell right from wrong. I.e., rationality.
I believe we are all slightly insane, some more, some less. Then again, it depends on who you are and what your standard of "insanity" is...
For me, absolute insanity is one step away from the nuthouse, but some people consider running in the rain to be an insane thing to do so I really can't give you a concrete answer.
Extreme confusion, I think.
the perfect world where you believe your sane and evryone else isnt while being perfectly happy all at once
Being able to look at yourself in the mirror and see that crazed look in your eyes.
The one that will always be there, no matter what.
Standing on the edge of a cliff, staring down, and realizing that you want to jump.
Repetivly doing something expecting the same result, even if you keep failing or getting different ones