A guy calls an escort for the first time they set up the date and they go into the bedroom.
As they are undressing the girl notices a rash all over the guys feet and she freaks out. The client replies "Its toe-leosis the doctor says don't worry its not contagious and gave me a ointment for it"
The guy then pulls his pants down to reveal a rash all over his knees, the girl again freaks out to this the guy says "Its the knee-sles the doc said it wasn't contagious either and gave me a cream for it"
Finally the girl pulls off his underwear and replies "I suppose you have a case of the Small-cox"