Justin Bieber answers a quick phone call from a surprise celeb during his take over with Radio Disney starts in this new shot from the Burbank, Calif., studios earlier this week.

The 16-year-old musician received an unexpected call from best friend Jaden Smith during his interview which revealed his ringtone — an audio snippet of Oklahoma State coach Mike Gundy during press conference in 2007 where he said, “Come after me! I’m a man! I’m 40!”

Justin said of his ringtone, “I watched the video, I thought it was funny, so I set it as my ringtone for everything.”

Justin Bieber: Never Say Never opens TODAY! So, after you listen to Justin‘s take over on Radio Disney @ 3PM PT/6PM ET, go see it!