How about I'm thinking of pranking people by dressing up in a suit, getting a clipboard and some random badge and going to walmart and pretending to be a manager or official and 'firing' people?
That is pretty elaborate. Why do you want to do that?
Because it's an interesting prank that sounds interesting to do, because I've always wanted to try doing it.
You should be careful when doing pranks like that. You can get into trouble for pretending to be an employee in a place that you do not work at.
I'm going to do it.
It's wrong to pretend to be an employee, just to prank people that are working. Instead, you should let them focus on their jobs and find something more productive to do.