Originally Posted by Fugazi Dave
Yell at them:
"Dear Sir,
You are a halfwit and an ass. Your presence here is a nuicance enough in itself, but when one factors in your behavior you become downright intolerable. Cease and desist being an utter waste of flesh and water, lest I slash your tires and defecate on your forehead.
Sincerely,
[your name here]"
Perfect. I will xerox this and past it to the inside of my visor.