I've worked for restaurants for a number of years, and it is surprising to me how often this kind of thing slips through. It's not uncommon for a bartender to name your tab by your physical features, especially if it's a busy night and there are multiple bartenders working. When I first started as a manager, I was shocked how often I had to change the names of tabs like "corner fatty" or "homos." More shocking to me was that now one understood how offensive this was, or that they hadn't been caught before. Ugh, people!