Photo: WENN.com

Justin Bieber joined Hangover actor Zach Galifianakis for the latest installment of his Between Two Ferns interview series, which ended in the Canadian singer being whipped with a belt by the comedy star.

During the interview, Galifianakis quizzes the star on his public breakdown, what goes through his mind when he is performing on stage and his ever-changing hair styles. When the actor tires of Bieber's sullen attitude during the interview, he lashes Bieber with his own belt, saying he is too young to be 'smoking pot' and driving his car at high speeds. See the interview below.

Below: Justin Bieber brawls with photographers outside London hotel