Bobcat Goldthwaite has revealed best pal Robin Williams is a member of Hollywood's well-hung club after shooting the Oscar winner waxed and naked in new film World's Greatest Dad.
Williams, who is famously hirsute, insisted on stripping for a scene in the film and wowed cast and crew by keeping his clothes off for the day.
Police Academy star Goldthwaite was so impressed with his pal and star's manhood, he can't understand why Williams doesn't bare all in every film.
The director says, "I spent the whole day with Robin... He's bottomless for the whole day on the set and I was like, 'Why are you insecure...?' If I was hung like him I wouldn't have pants on right now.
"Honestly, if that was me, I'd just be, like, walking around: 'How do you like me now, b**ches?'"
But Williams' daughter was a little shocked to see her father naked on the big screen at the film's premiere.
Goldthwaite adds, "She goes, 'Thanks for the heads up I was going to see my dad's hog.'"
Williams admits he felt he had to wax his torso for the naked scene - because he looked awful when he stripped for a scene in The Fisher King.
He explains, "I shaved because if you don’t, it’s, like, animal-rights issues.
"I did a nude scene in Fisher King; it was Central Park, I was a homeless guy, so I was covered in dirt and really hairy, and it was like, ‘Is that Bigfoot? What happened?'"
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