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, the doctor whacks 
him on the ass with a baseball bat, and then sends him into 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."