What Ben Affleck Said When He Surprised the Michigan State Football Team

— -- It's no surprise that Ben Affleck is filming "Batman v Superman: Dawn of Justice" in East Lansing, Michigan, but the surprise was that the action star was working out at the Michigan State University football weight room.

Affleck was lifting weights when coach Mark Dantonio asked him to address the team, according to the Detroit Free Press.

Read: Ben Affleck to Star as Batman in ‘Man of Steel’ Sequel

"I'm Batman," Affleck, 42, said, walking out on to the practice field. He then told them to win next week or else ... minus the "or else" part.

Check out the photos.