There are some things that just aren’t a joking matter, and as far as teen singing sensation Justin Bieber is concerned, it would seem that making jokes about his mother and Harry Styles are likely to have him hang up on you…

Which is exactly what Justin did to radio DJ Thomas ‘Mojo’ Carballot during a phone in interview for Mojo’s Thursday morning show, Mojo in the Morning.

Justin’s anger was prompted when Mojo began talking to him about his friendship with the One Direction lads, and added, “Do you worry about Harry [Styles] around your mum since he likes older women?”

A livid Justin said, “I think you should worry about your ma, bro,” to which Mojo responded, “I should worry about my mum? Justin, my mum’s dead so unfortunately I don’t think that will work…”

Ooo burn. Round 1 to Mojo – Justin, nil points.

After a rather hideous silence, Mojo said, “This is where the interview goes really south, right Justin?”

But Justin didn’t reply, choosing instead to slam the phone down. O oh.

Here’s a recap of what occurred…

What do you think about this story? Would you have been as furious as Justin was? Or would you have taken it as a joke?

Let us know!