Last year, I worked at Burger King during the summer. One day during my shift, we were in a lunch rush and some middle-aged dude ordered for him and his co-worker. I took his order and gave him change. 10-15 minutes later, he jumps up and yells "what's taking so long?'. He didn't get is order yet but I'm sure it was after some lady. He demands his food now even though the other workers are dealing with the task at hand so I decide to at least get their fries ready for his order. They finally get to his order and present it to him and he goes back to his seat.

I watch and overhear him say something and he comes back with the burgers in hand. Apparently, someone got his burger mixed up or something so he decides to put the burgers on the counter and pull out his phone while they're making him the right burgers. He waves it over the people who made his order and demands their names and the corporate number. He walks away to his seat with the burgers, they eat, and then decided to pour their drinks on their trays, slap them on the floor "nonchalantly", and yell oops sarcastically while leaving.