The outlet reports that when the country singer was dining with her mother and a family friend, an older man started arguing with one of Miranda's buddies.
TMZ reports that Lambert was having dinner at Stoney River Steakhouse with her mother and a family friend on Sunday, when another man at the restaurant began arguing with her friend. When the man later approached Lambert's table and started screaming, the two-time Grammy Award victor dumped a salad in his wife's lap, according to TMZ.
According to TMZ, Lambert eventually walked over to the man's table and dumped her salad on his wife.
Nashville police confirmed to PEOPLE that they responded to a call regarding two men fighting at Stoney River Steakhouse on Sunday evening around 8:00 p.m., though they can not confirm Lambert was involved.
By the time police arrived at the scene after responding to a call about two men fighting, Miranda's team had made like iceberg lettuce and leafed the restaurant. TMZ reports that authorities didn't file a report.
Lambert's rep would not comment.