Damn straight:

If a customer never says “Please” or “thank you” during the course of the meal you’re getting 15% or less.

If the customer says “You’re the best waiter I’ve ever had” – your tip is sure to be shit.

A customer who smells the cork is an amateur.

Serve Decaf – to everybody.

Never shortchange the bus people when you tip out.

Coke head waiters work their entire shift. The Potheads always want to leave early. The Crackheads bolt as soon as they get their first cash tip.