Three psychiatrists agree that people come to them with their problems, but they have no one to go to with theirs, so they decide to listen to one another's deepest, darkest secrets.
The first confesses, "I'm a compulsive shopper, deeply in debt, so I always overbill my patients."
The second admits, "I have a drug problem and I pressure my patients into buying drugs for me."
The third says, "I know it's wrong, but no matter how hard I try, I just can't keep a secret."