A psychology student at a local university was sent on a field assignment to evaluate three patients in a local mental hospital.
The first patient was locked in his room throwing tennis balls everywhere. The student asked why, and the patient answered "When I get out of here I going to ba a tennis pro."
The second patient was locked in his room throwing baseballs everywhere. When asked why he said "When I get out of here I going to be a professional baseball player."
The student thought he was starting to get the hang of things, until he looked in on the third patient. There locked in the middle of the room was a naked man, masturbating with a peanut on the end of his penis. The student asked, "I understand about the others, but what are you going to be when you get out of here?"
"They're never going to let me out of here," the patient said "I'm f**king nuts!"