Blue Circle...
A construction worker Bill goes to the doctor and says, "Doc, I'm really 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 cricket bat CRACK... and then sends him into the toilet
He comes out a few minutes later and says, "Doc, I feel great. What should I do to prevent this constipation ?"
The doctor says, "Stop wiping your @rse with cement bags."