Unlike insanity, which is simply a lack of sanity, outsanity is the complete opposite of sanity. Imagine going all the way through insanity and coming out on the other end, discworld-like, in a state that is so silly and weird and zany that there is no other way to describe it other that being completely outsane; a sort of state where your sanity is racing down a fifth-dimension street with a soapbox parade in tow, shouting 'I am the emperor of Sicily! I am nighthoover! Fear me! FEAR ME!' - imagine that, if you can, and you might get an idea of what outsanity is like. But you have to be there to know it.
A: What the hell is that? Are you mad?
B: Mad? Me? Oh nonono, my dear... I'm outsane. Muahahahaha!
Originally from Arabic, in which it means a sort of temporary shack or lean-to, this word was given a whole new meaning in Hebrew slang: it describes the sort of atmosphere that hangs around on those lazy summer days, when it's too hot to be doing anything and there's nothing to be done anyway, and you just sit in the shade and stare at the sunlight outside in a sort of half-conscious state. A zoola can last as little as a few minutes, or as long as days, depending on the situation.
What a zoola... I can stay like this for hours. I'm not going anywhere.