Justin Bieber has turned a new leaf entering his 21st year and he wants to prove his manhood to everyone, especially his haters.

The "Boyfriend" singer has put a call out to Seth Rogen to join the "Comedy Central Roast of Justin Bieber" to skewer him on national television. Rogen has never hesitated in the past to express his honest opinion about the teen idol.

The comedian tweeted last January, "All jokes aside, Justin Bieber is a piece of s***." He clarified his statement a few months later on the "Howard Stern Show."

"He's a good example of someone you meet, who you think you're going to hate, and then you get to hate him as much as you thought," Rogen said on the show (via Gawker). "You meet him, and he lives up to every one of your expectations of how you hope he will be."

Bieber extended an invitation to Rogen to participate in the Comedy Central special alongside Roast Master Kevin Hart and already announced roasters Jeffrey Ross and Hannibal Buress. His hashtag #WeWantSeth started trending within an hour of the post going up.

The "Comedy Central Roast of Justin Bieber" will tape at Sony Studios in Los Angeles on March 16 and air on March 30.