Wrong sandwich? "Fire that bitch"
Forgot the fries? "Bitch I'm gonna kill you"
McDonalds et, al sure has a real problem. I see this as only the first sign of a rioting class about to emerge when their food stamps stop, their welfare stops, their housing subsidies stop, etc....
Only a horribly imbalanced person climbs over the counter at a fast food joint, tossing food and kicking at the employees because "bitch forgot my fries".
If you have some threatening your employees and making problems in the store you maybe have to call the cops and eventually they'll get the message.
Even during a rant the employees and manager should be polite to the customer talking trash so they don't go totally off.
If they get physical, call the cops for sure.
There was a black girl in Brooklyn recently, who got beaten almost to death by a group of other black girls. Mainly because she sang better than them at a talent show audition. So they pounced on her like a pack of hyenas after school.