Bradley Cooper is obsessed with flossing his teeth.

The 34-year-old actor hates having pieces of food stuck in his mouth and is fanatical about ensuring his teeth are clean.

Speaking as he drew the medicated dental string between his teeth, Bradley

said: "Oh... mmm... that was great! Oh man - that clam I just got out. Jesus Christ. Oh, that's bliss."

'The Hangover' actor - who plays Phil Wenneck, one of four friends who go to Las Vegas for a bachelor party, in the new comedy movie - is amazed he has found fame by starring in funny films, as he struggles to raise a laugh in his everyday life.

He explained to Details magazine: "I'm not even funny at all. That's what's so ironic.

"When I was young I thought I'd be suited to more action types of roles.

Just because when I was a kid, I would fake fight all the time. I was really good at the sound effects. That's the reason why I thought I would be effective in this business."