Dave Grohl is a master of swearing at Foo Fighters concerts, so he needed some help to not curse during the band's show after the Abu Dhabi Grand Prix on Sunday.
In Abu Dhabi cursing is strictly prohibited and dropping an F-word is a crime that's punishable by up to a year in prison. So to make sure he kept things clean Grohl had a sign with "NO CURSING" written on it taped to the stage.
He ended up showing the sign to the audience and then taped it to his mic stand. He told the crowd, “I think that’s the first time ever” that he didn't curse at a show.
Grohl can go back to his potty-mouthed ways starting on Wednesday, when the Foos kick off an Australian tour.