Cody Simpson is all smiles in this new promo pic for his guest co-hosting spot on MTV’s 10 on Top.

In the photos, the 15-year-old musician joked around with the show’s host Lenay Dunn.

PHOTOS: Check out the latest pics of Cody Simpson

“One of my favorite moments from the shoot was when Cody taught me how to surf on an invisible surfboard!” Lenay shared. “He took my hands and showed me how to stand in the proper surfing position.”

This week’s episode features Joe Jonas, the casts of Degrassi, Teen Wolf, Shake It Up, and Kendall and Kylie Jenner.

10 on Top airs this Saturday (August 11) at 11:30 am ET.