When people get messed up orders or bad service they need to think about the ten minutes prior to their arrival. Fast food is a constant churn of humanity and you are just a little 5 to 10 minute slice of that. What sort of fucked up situation was your server/team dealing with before you rolled up? As every redditor knows humanity can really suck at times and there's always a dozen people who roll up to the drive-thru AFTER the /r/publicfreakout video ends. Even if it's not to that level people are just assholes for no reason at times.

This weekend I went into a bagel place that I go to frequently and they were a bit busy, and the woman waiting on us was really pretty curt. No biggie, I was getting my food and I kept thinking about ten minutes prior. Her coworker was helping out with the order and I'd ordered a non-toasted bagel and she started toasting it. Coworker corrected her and said, "no he didn't want it toasted". I overheard this and said, "Hey no big deal - I'll take it toasted, I really don't care." As I was getting my food her mood had changed and she was chatty and nice. Maybe just being a non-asshole for a bit after she'd been dealing with a sea of assholes made the difference....