Do I have anger issues for getting this mad at McDonald’s customers?

I work at mcdonald's. My last day is tommarow. I usually work at second window and just hand orders out. You're supposed to add sauces with your meal when you order, but so many people ask for sauces when they get to the second window. Im supposed to charge them but I dont because it would fuck our times up and I'd get yelled at. So last night some guy pulls up to the window. He asks for BBQ sauce. So I run across the kitchen and grab some. When I hand it to him, he's like "and ranch". There wasn't any in the kitchen so I had to run to the back of the building and grab some. This was just infuriating and I was kind of short with him after that.

Do I have anger issues for getting this mad at McDonald’s customers?
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