Dr. Leroy, the head psychiatrist at the local mental hospital, is examining patients to see if they're cured and ready to re-enter society.

"So, Mr. Clark," the doctor says to one of his patients, "I see by your chart that you've been recommended for dismissal. Do you have any idea what you might do once you're released?"
The patient thinks for a moment, then replies, "Well, I went to school for mechanical engineering. That's still a good field, good money there. But on the other hand, I thought I might write a book about my experience here in the hospital, what it's like to be a patient here. People might be interested in reading a book like that. In addition, I thought I might go back to college and study art history, which I've grown interested in lately."
Dr. Leroy nods and says, "Yes, those all sound like intriguing possibilities."
The patient replies, "And the best part is, in my spare time, I can go on being a teapot."