Footage shows the woman stalking away from a security guard at a Los Angeles location to punch in her order at a self-service kiosk.
The guard walks directly over to the patron, squares up to her and lets loose a hard slap across her face.
“The security guard was telling her to leave, and she didn’t want to because she was ordering food,” said Alejandro Sanchez, who recorded the video. “Then he just went off, and she started going crazy.”
After being struck, the woman held her face in stunned disbelief and walked away from the guard to the other end of the cantina.
He follows the woman, who is still holding her face as she stands beneath a television broadcasting the Super Bowl, and the two have a heated conversation before the guard escorts her out of the restaurant.