As a guy who worked at a taco bell for exactly 2 weeks before being fired for pulling an asshole customer over the counter... they MAKE us say that... stop giving them a hard time they are just a bunch of broke kids trying to make some money.
Oh, I don't give them shit over that. I know they are forced to pretend to care.
I just say random goofy shit to maybe make their day a bit brighter.
My favorite one is from the movie Liar Liar - "I'm a little upset about a bad sexual episode I had last night."
Usually, they laugh or there is that uncomfortable silence while they wonder "did he just really day that?"