Joe went to a psychiatrist. "Doc," he said, "I've got trouble. Every time I get into bed, I'm sure that there's somebody under it. I haven't slept in a week. I'm going crazy."
"Come to me three times a week, and I'll cure your fears."
"How much do you charge?"
"A hundred dollars per visit."
Six months later, the doctor met Joe on the street. "Why didn't you ever come to see me again?"
"A bartender cured me for $10. He told me to cut the legs off the bed!"