Famous pop singer Justin Bieber and the iconic night show host James Corden throw on some sweats to bust a move in their new dance class. We, the viewers, get to see how the whole thing unfolds when the unexpected teacher shocks the two celebs.

While you’ve heard of things like Jazzercise and choreography, you’ve never heard of what you’re about to see: Toddlerography. With Bieber’s hit song “Baby” playing in the background, Justin and Corden have to learn a new dance from a toddler.

As they get into formation, several toddlers lead the way to help teach these two the moves that go along with Justin’s song. While some kids take it more seriously, others have fun during this once-in-a-lifetime experience.

With cartwheels, the floss, and a whole lot of bouncing, the toddlers manage to lead the way and have a blast with James and Justin. The dance ends up taking quite a toll on Corden, which leads them to have a relaxing moment of taking a breath and blowing some bubbles.