investigateworld,
When I was a waiter in the mid-80’s we would sometimes get a tip of a couple quarters after a $50 tab. When would make sure we had the customer’s attention and we would throw the .50 in the garbage. Most of the time the customers would get offended and threaten never to come back. We, of course, were delighted since we never wanted them back. Some still didn’t care but they couldn’t have liked our ingratitude for their generosity.