You have to see it to believe it.
The guy wasn't happy enough to give her no cash whatsoever. In addition to writing a big zero for a tip, he wrote the following:
In case you can't make it out it said "You could stand to loose [sic] a few pounds."
And I thought leaving a penny as a tip for bad service was bad.
To be fair, we didn't hear the other guy's side of the story and for all we know the waitress could have been bad. But, we don't have any evidence of that but we got written evidence of her calling the waitress fat.