Near where I used to live was what was commonly called the WWMickyD's (Worlds Worst McDonalds). Your order would take 10 minutes to fill (BigMac combo?), would be wrong half the time and the "cashier" couldn't understand English or make change.
I went in there armed with $2 bills, Sacajawea dollar coins, Susan B. Anthony dollar coins and a couple of Kennedy half dollars.
I placed my order, wait, wait, wait, paid for it with a $2 bill, a SBA dollar coin, a Sacajawea dollar coin and a Kennedy half. The "cashier" couldn't figure out what the currency and coinage was and wouldn't take it.
I told him to call the shift leader who did the same thing.
I asked to see the "Manager" who did tell the other 2 employees that it was legal tender.
PS: The "cashier" still couldn't get the change right.
The "Cashier" couldn't figure out where to put the $2 bill and the dollar coins in his drawer and had to call the shift leader again.
I'm about to crack up, the people behind me were either laughing their heads off or were PO'ed.
It was for once worth the wait for a cold Big Mac.
I've told others about this and they have done the same thing at this same "fast food establishment" and encountered the same experience.