A businessman had been away on business for a few weeks and was very horny. He knew he wouldn't see his wife for quite some time so he decided to stop in at a local whorehouse. The businessman walked in and said "I would like your cheapest whore please."
The lady at the front desk said, "well that is Sandpaper Susan at the end of the hall, and that will be five bucks."
The businessman pays the money and goes down the hall and meets the girl and starts to have sex. He then says, "you know, this is really rough"
Sandpaper Susan then says "well hold on" and she goes into the bathroom.
She comes back out and they start having sex again and the guy says "this is great, what did you do?"
"Oh, I just picked the scabs."