A construction worker goes to the doctor

A construction worker goes to the doctor and says, “Doc, I’m constipated.”

The doctor examines him for a minute and then says, “Lean over the table.”

The construction worker leans over the table, and the doctor whacks him on the ass with a baseball bat, and then sends him to the bathroom.

He comes out a few minutes later and says, “Doc, I feel great. What should I do?”

The doctor says, “Stop wiping with cement bags.