A guy consults a doctor. His problem is that he has a quite vivid red ring around his penis. Of course, he is scared nearly out of his wits.

The doctor takes one look at the problem - and is very reassuring. He gives the guy a prescription and tells him that it is for a cream. He is to apply it and then wash it off.

The guy fills the prescription, follows directions - and it works like magic!

The guy is so grateful that he comes running around to the doctor's office, barges past the receptionist and is thanking the doctor for this miracle cream that had been prescribed. "You are a miracle worker!"

The doctor says: " It was only a cream for lipstick remover".