I'm sitting here -my face feels like it can't stretch far enough to fit my grin- wondering what the hell is wrong with me. Is this normal? I feel insane, one minute looking battier than a cheshire cat, the next ready to shed tears the size of rowboats. I try to find a pattern, try to make sense of my impending insanity. The calm has returned: I've found one, and it's fairly simple really. I only…