With the restaurant overcrowded from people looking to avoid the monsoon rainfall, the scene quickly turned violent.
While some people enjoyed burgers and fries as they waited out the storm, others opted for knuckle sandwiches.
Video footage shows what appears to be two groups engaging in a verbal altercation. Soon, things escalated and turned into a full-blown melee in the dining area.
Punches were thrown, and bodies can be seen being dragged to the floor. Customers uninvolved in the altercation can be seen retreating toward the wall to avoid damage.
An In-N-Out employee can also be seen calling 911 for assistance.
Huge Brawl broke out while Camped out inside a In N Out during Monsoon Storm in Arizona ? pic.twitter.com/0QyA7IYtaG
— DownInnaDesert (@downinnadesert)
Details about what initiated the brawl remain unclear.
However, several people have chimed in on the now-viral video.
Social Media Users React to Shocking Brawl
"Dude was not gonna let his fries get cold," a user commented, highlighting a customer who enjoyed his meal during the brawl.
"You can't even overpay for food and be safe," another replied.
"Sad. This is ridiculous," an X user said of the brawl.
Surge in Massive Brawls Continues
An In-N-Out Burger dining area is certainly an odd place to witness a fight— especially one of that scale.
However, it isn't the most shocking location to host a melee this year.
In April, a massive brawl broke out at Hersheypark, resulting in 55 arrests.
Derry Township police reported that multiple fights broke out around the park on April 3, and those involved ranged in age from 12 to 19. Visitors were forced to hide their families and children under tables to avoid the wide-scale brawl.
The amusement park brawl was so severe that ride operations were temporarily halted.
Halfway across the country, at Six Flags St. Louis, a brawl involving roughly 100 visitors broke out. The shocking incident occurred on April 25, the opening day of the themed amusement park.
Amusement park attendees are not the only ones throwing hands.