17 Again (2009)

17 Again is a 2009 body-swap comedy in which a washed-up family man wakes up back in his teenage body for a second shot at high school, with Zac Efron carrying the lead. It's a mainstream studio picture, so nothing explicit is on the table, but Efron's shirtless, gym-toned frame gets plenty of screen time regardless. CelebMasta has 1 scene from the film pulled for that exact reason.