Now, just HOW did the patron discern her orientation, eh? Perhaps the establishment should ask whether it is appropriate for their servers of any orientation to flaunt their sexuality at work?
Gratuities are supposed to be earned by exhibiting good service. I sincerely doubt there was any gratuity earning included in the waitress' service.
Some people leave their tips in cash for the benefit of the waiter. I'm guessing that was done here. they dyke is pulling a hoax.