Apparently the guy was just picking up a takeout order. He wrote ‘none’ in the tip line, so a staffer couldn’t write in a tip for themselves and my guess is that act peeved the waitress who took revenge:
http://news.rapgenius.com/Devin-barnes-racist-red-lobster-receipt-denial-statement-lyrics
That’s a good possibility. Seems like a huge risk for what would only be a few dollars anyway.
Yeah, I love how people still expect tips for counter service.