It all started Tuesday night when a customer got angry at Bill Gardner Parkway restaurant after missing something on their order.
A 16-year-old member of staff told WSB-TV 2 Atlanta that the customer started throwing coffee on the drive-thru window, before knocking on it and grabbing a chair.
Mobile phone video shows staff fighting back by throwing coffee at the customer through the drive-thru window, further infuriating them.
“We did it to defend ourselves, because we didn’t know what to do,” the staff member said. “I was scared, because like, you never know how crazy people are. He could have had a gun and shot us all.
McDonald’s staff, many of whom were said to be 16, called 911 and ran to the refrigerator, which they locked themselves in as the angry customer entered the store.
An employee allegedly grabbed a crowbar to prevent the man from being violent. The client, who was with another individual, threatened to throw a chair.
The local police department, who arrived to find the client was gone, told WSB-TV 2 Atlanta that both clients had been identified and charges could be laid.
The independent has contacted McDonald’s for comment.