Funnyman Seth Rogen is desperate to film a full frontal nude scene - because he's convinced it's the only way for a comedic actor to succeed in the movie business.

Rogen pulled his pants down to show his naked backside in forthcoming film Zack and Miri Make a Porno. But he insists it was a captivating performance by his pal, actor Jason Segel, which convinced him that going fully nude should be his next step on set.

Rogen says, "Last year a movie came out: Forgetting Sarah Marshall, with Jason Segel - who I'm actually friends with. He shows his frontierre (full frontal) on that, but as soon as I saw it, it was like when the first guy dunked in basketball - all the other guys are like, 'Now I'm going to have to dunk to stay in the game'. As soon as I saw his penis, I was like, 'Now I've got to show mine to stay in the comedy game.'"

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(This news article provided by World Entertainment News Network)