Zach Galifianakis

Zach Galifianakis

Zach Galifianakis hit Justin Bieber with his belt during an interview.

Galifianakis was interviewing Bieber for his internet spoof show 'Between Two Ferns' and ended up talking about the singer's antics that have hit the headlines so far this year.

By the end of the interview, Zach screeches: "I don't like your attitude, to be quite honest. You're too young to be smoking pot and pee-peeing in buckets and driving up and down on the highway fast!

"I don't think your mum would really mind if a stranger whipped her son."

Galifianakis then went on to take of his belt and hit Bieber three times with it.

He says: "I'm sorry that I did that. I don't really think spanking kids is a good thing. But you're not a child. That's the point. You're not a child, so I can hit grown men with a belt."

Bieber went along with the antics of the comedic actor and posted this Twitter link to the interview.

"Ladies and Gentlemen this is a very important interview. Very important ... In all honesty it might be the most important interview of this year (sic)