Note to fans attending a Tim McGraw concert: behave!

A year after Tim made headlines for shoving and then ejecting an unruly fan, he was forced to play vigilante again. The San Luis Tribune reports that the country singer stopped his show Sunday at the California Mid-State Fair to reprimand a fan whom he believed was acting ungentlemanly.

"You don't treat a woman like that," Tim said from the stage, as the audience cheered.

It's unclear what exactly the rowdy fan did to tick Tim off. The singer wouldn't resume his performance until security escorted the man out.

Tim is set to release his first studio album in two-and-a-half years, 'Southern Voice,' on October 20. Its first single, 'It's a Business Doing Pleasure With You,' is already in the Top 15 on the Billboard singles charts.