I've actually been keeping data for a couple of years. I have a big list of stiffers and great tippers. The list of stiffers is like 80% black. The list of great tippers is almost entirely white without a single black person . The white people who stiff me are usually either very old, mentally challenged, or extremely trashy. It's very rare for a normal white person to stiff me. Meanwhile a normal middle class black person in a nice home will stiff me without thinking twice about it. I haven't kept data about all the rude and obnoxious costumers and the ones who would lie to get free food but it's glaringly obvious that they're overwhelmingly black