The 42-year-old Transformers: Age of Extinction star hosted the annual Nickelodeon event at the Galen Center in Los Angeles, and couldn't escape the show's signature bit. With a little help from Kevin Hart, the actor's own children got in on the act.
Austin Mahone and Cody Simpson also got slimed.
Hunger Games: Catching Fire took home several of the night's big awards, including Favorite Movie and Favorite Movie Actress for Jennifer Lawrence. Adam Sander won Favorite Movie Actor, while Frozen picked up Favorite Animated movie.