bieberdiva.jpg Look out Xtina -- there's a new diva in town, and he might be even nastier than you!

When Justin Bieber appeared on the Australian TV show Sunrise last month, the 16-year-old pop singer allegedly got testy with a stage manager when he attempted to show the singer where to go prior to his performance.

In a radio interview yesterday, Sunrise host David Koch said, “We had him on and he was a thoroughly nice bloke ... a really decent guy. But our floor manager was directing him to where he was about to perform and [Justin] turned around and said to him, 'Don’t ever f*cking touch me again'!"

Koch added that Bieber’s sound technician said the pop star is known for his foul mouth, but Justin defended himself on Twitter the other day. "Family time with my mom couldn't come at a better time....I was raised to respect others and not gossip...nor answer gossip with anger," he tweeted. "I know my friends family and fans know the person I am. Hearing adults spread lies and rumors is part of the job I guess."