You can play your AC/DC your Nickelback your P.O.D. your Papa Roach . . . you can play some really terrible music at NFL stadiums and nobody will say a word.

But Katy Perry? Nuh uh.

The Cincinnati Bengals found out that the hard way when they played the bubblegum pop star's song "Roar" before during and after Monday's win over the Pittsburgh Steelers in Paul Brown Stadium. It was the song to which the Bengals entered the field.