Nicknames for Regulars

In any restaurant, there are always those customers that come in more than once... almost like every day. Unfortunately they are your regulars. Although it is true that 80% of a business's business comes from 20% of it's customers, sometimes we just don't like some of those regulars. If your restaurant is just like mine, you'll have nicknames for specific regulars. These regulars may or hopefully may not know of these nicknames.