Christine Duran, Christina Huerta and Isabel Robles say their enjoyable meal at Chilly D's Sports Lounge in Stockton, California ended painfully when the waiter plopped down the offensive receipt on their table.
"I got the bill, and I was like 'Why does the receipt say 'fat girls'?'" Duran told News 10.
Duran's friends initially refused to believe her, the 'New York Daily News' reported.
"I was laughing at her, and she was like 'I'm serious'. I'm like No, it does not say fat girls. Let me see it,'" Huerta said.
The women confronted the waiter, who denied any involvement, saying the slur was likely entered by the server who had taken their order.
The women demanded to see the manager, who then offered the ladies 25 per cent off their bill