David Letterman couldn't help but laugh at Justin Bieber after the singer had no idea what the Sistine Chapel was.
It began when Letterman chided Bieber about getting tattoos on his body.
"Do me a favor, don't go nuts. You know what I mean?," said Letterman. "More and more you see like a mural, like the Sistine Chapel on a.... you know, it's too much!"
"I'm not going for the Sixteenth Chapel look," replied Bieber.
A look of embarrassment came over Bieber as Letterman joked "Candian high school!"
David Letterman couldn't help but laugh at Justin Bieber after the singer had no idea what the Sistine Chapel was.
