Peter goes to a doctor. "Doctor, I've got a problem," he says. "Every time when I get into bed, I think that there is somebody under it. I look under the bed and I think there is somebody on top of it. Top, under, top, under I think I am crazy!"
The doctor thinks for a moment. Then he says, "Come to me for 2 years. Come here three times a week and I will help you."
"How much will I pay," Peter asks.
"A hundred dollars for a visit," Doctor says.
Peter says, "I think about it."
Peter never visits the doctor again. Sometime later, he meets the doctor on the street.
"Why didn't you come to visit me again." the doctor asks
"A hundred dollars for one visit? It's expensive for me. A barman helped me for 10 dollars."
The doctor is shocked, "What did he do with you?"
"He told me to cut the legs of the bed."
