Constipation!!
Banta, 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."
Banta leans over the table, the doctor whacks him on the ass with a bat, CRACK, CRACK, CRACK...,and then sends him into the bathroom.
Banta comes out a few minutes later and says, "Doc, I feel great. What should I do to prevent constipation ?"
The doctor says, "Stop wiping with cement bags."