Washington (ANI): Actor Robin Williams" daughter Zelda was left embarrassed after seeing her father nude in his new movie World's Greatest Dad. The comedian plays teacher Lance Clayton, who turns his life around after suffering a terrible family tragedy. In the film, Williams' character suffers a mini-breakdown and strips off for a plunge into a school swimming pool.

"Actually it (the nude idea) was mine. I thought, It's at the end of the movie, where this guy is having a catharsis... he's getting rid of everything, why not go (nude)," Contactmusic quoted him as saying. "I dive into a pool and, coming up (to the surface), it's almost like a rebirth. It's a strange thing and, in a weird way, it worked," he added.

However, Williams failed to warn her 20-year-old daughter about the scene, who was left stunned at the recent premiere of the film. "My daughter was at the premiere. She came up and said, 'Thanks for telling me, dad. She's 20 now and she was like, Thanks for giving me a heads up about the nude scene!" he added.

Williams says he can understand how horrifying it must have been for her - because he'd react with horror if she ever stripped off for a film. He said, "I think I'd be like, ''Stop! Turn that off! That's when hypocrisy comes up and goes, Payback's a b**ch!"