Mrs. Simpson, I'm sorry, but your husband suffers from a persecu...
Psychiatrist: Mrs. Simpson, I'm sorry, but your husband suffers from a persecution complex, extreme paranoia, and bladder hostility.
Marge: Doctor, if you just talk to him for five minutes without mentioning our son Bart, you'd see how sane he is.
Psychiatrist: You mean there really is a Bart?! Good Lord!