Justin Bieber may be too young to remember the "yo momma" trend, but if a recent phone interview is any indication, it's safe to say he would not have been a fan.

The Biebs wasn't in a laughing mood when he hung up on the host of radio show Mojo in the Morning. In an interview which was pre-taped for the show, the singer first became annoyed when the program's host, Mojo, compared his single "Boyfriend" to Justin Timberlake. ("Man, that's crazy 'cause our voices sound nothing alike," Bieber said.) But Bieber finally hung up on the disc jockey when he insinuated the 18-year-old may want to keep an eye on his mother when his One Direction buddy, and noted cougar-lover Harry Styles, is around.

After acknowledging his friendship with the British boy group, referring to them as "good kids," Bieber was taken aback by Mojo's insinuation. "Don't think you should worry about me -- worry about your mom, bro," Bieber retorted before hanging up, effectively ending the interview while Mojo was explaining how his mother had passed away.

The incident aired on the show, but has since been taken off Mojo in the Morning's official site. (It can still be found here.)

Mojo took to Twitter after the interview, insinuating that he'd been suspended over the incident, though he clarified that wasn't the case "Sorry I made anyone think I'm suspended, I'm really on vacation," he Tweeted around noon Tuesday.

As for the Biebs, now that he's gotten a taste of school-yard teasing, he can finally graduate like a normal teen -- which, E! Online reports, he did! And, like all the cool kids in school, the Biebs was too busy doing something swaggy to be at his own graduation, which took place at St. Michael Catholic Secondary School in Stratford, ON.