Seth Rogen calls Justin Bieber 'obnoxious, ungrateful and insincere'

Suffice it to say that Seth Rogen is not a “Belieber.”

The actor has defended his controversial comments about fellow Canadian star Justin Bieber this week, calling the embattled singer “obnoxious, ungrateful and insincere.”

Appearing on an episode of Watch What HappensLive at South By Southwest, the comedian, 31, was asked to defend a divisive tweet he had posted following Justin’s DUI arrest in Miami in January.

Seth reiterated his low opinion of the 20-year-old and added more unflattering adjectives to the mix.

"He puts people's lives in danger with his horrible, horrible behaviour," he told host Andy Cohen.

The actor's distaste for the headline-grabbing pop star was perhaps emboldened by a deposition video that has been circulating this week.

MORE: Justin Bieber's life in the spotlight

In the clip, Justin appears uncooperative and combative with the lawyer who is questioning him.

“I don’t have to listen to anything you have to say,” Justin says at one point during the four-hour interrogation, which has been making its rounds on the Internet.

Seth isn’t the only Canadian who has called out the controversial crooner for his reportedly poor conduct. The pop singer is also famously feuding with fellow Juno nominee Deadmau5, who called Justin “an idiot” on Twitter after his arrest.

HELLO! Canada magazine is available for your tablet and smartphone. Get HELLO! Canada, PEOPLE, Vanity Fair and over 100 more of the world’s best magazines for one low monthly price at Texture by Next Issue. CLICK HERE to sign up for a free trial.