Would not common sense dictate that if you want repeat customers coming into your establishment, that it's a good idea to NOT make obscene gestures to the paying customers, who actually provide the basis for one's paycheck, and not piss them off so they will never come back?
Really? IF you worked for me and ever insulted a visiting guest who was a customer of mine, you would be shown the door in less than two minutes.
Clo apparently has the morals of a stray cat...