Justin Bieber Roast: 'You have such a great career behind you,' plus more of the harshest jokes from Comedy Central take down

"I should have known. Everybody was going balls to the wall."

In true Comedy Central style, no nerve was left untouched when comedians, rappers, Will Ferrell in full Anchorman character and, erm, Martha Stewart laid into the pop singer on Saturday.

Some spectacular jokes were to be had at the expense of the star, who chipped in with a few lines of his own when he got the chance to take to the microphone after his verbal battering.