Ill join in on the IMB group thing too. Guilty. My dad talks alot and every so often ill wonder off and he'll see me laugh and wonder what i am laughing at. Now ill catch myself talking to myself and make one line comments or thoughts. Mostly in the shower in the morning, dunno why, thats when i get my best work in i guess. But i sure the hell dont make conversation with myself outloud and have discussions about something or talk to imaginary people. Thats when you know you are now in Looneyville, like the guy TT described.