The taste of revenge
Food thieves are an established office phenomenon, and it doesn’t appear as if they will be going away anytime soon. People have tried labeling their food with their names, but it hasn’t worked. He continued to bring fresh doughnuts to the workplace, only to discover that someone had eaten them without even asking after the second time. He eventually found a method to keep people from stealing his doughnuts.
According to this logic (Joey’s logic), there’s no reason why doughnuts with mustard can’t be incredible, right? Well, we don’t want to find out. Doughnuts weren’t meant to be stuffed with mustard; it seems like a typical workplace joke.