This guy walks into a psychiatrist's office with a...

This guy walks into a psychiatrist's office with a concerned look on his face. "Doc," he says, "I'm worried. It's that dream. I'm having it again." "What dream?" asked the shrink, not really paying attention." You know," says the man, "the one where I'm into sadism and bestiality and necrophilia. Should I be worried or am I just beating a dead horse?"