So this guy sticks his head into the door of the barber shop and says "Bob Peters here?" and the barber says "no, we just give haircuts."
Rimshot!
In China, a "barber shop" can either be a legitimate place to get your hair cut, or is an illegal brothel. The way to tell the difference is that real barber shops have windows that you can see into, see people getting their hair cut. If the barber shop is around back and upstairs, then Bob Peters is probably there.