I'm sure Dr. Sheldon Cooper gets asked quite a few times per day if he has a stable mental condition. However, you can rest assured because his mother already went through all of the trouble of getting him checked as illustrated by this 100% cotton Big Bang Theory Sheldon's Not Insane T-Shirt! Based on the hit television show, the Big Bang Theory Sheldon's Not Insane T-Shirt is a black t-shirt that validates Sheldon's claim along with his name and scholastic accolades. I would just keep the 'BAZINGAs' to a minimum.