Hilarious: Zach Galifianakis Spanks Justin Bieber On 'Between Two Ferns' Show [VIDEO]

Zach Galifianakis brings teenage heartthrob turned bad boy Justin Bieber to his show 'Between Two Ferns' just to give him a stern talking to. We are glad Justin Bieber can take a joke and laugh about his recent mishaps in the tabloids.