Sounds like FW is similar to a couple of our Captains, who after a shared dinner and split bill casually ask if it's OK to put it on their credit card. They then trousers the tip in cash and pay the bill only ! Problem is, they get found out and get the 'special' from the grill on the way home ! If you piss off the back end, bring sandwiches and a flask, it's going to be a long night