Robin Williams doesn’t just have a big personality, according to his friend Bobcat Goldthwait.

Godthwait, who directed the actor and comedian in the black comedy ‘World’s Greatest Dad,’ made the observation after shooting Williams waxed and naked.

WENN says via Starpulse that the famously hirsute, and apparently insecure Williams insisted on stripping for a scene and then decided to keep his clothes off for the day. Goldthwait was blown away by the magnitude of his pal’s performance. He said, “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?’”

‘World’ Greatest Dad’ stars Williams as a high school poetry teacher, failed writer and single father to a disturbed teenaged boy. A USA Today review said the non-family friendly film, which features foul language, sexual content and disturbing images may qualify as “the most uncomfortable and unsettling movie to sit through of any this year.”

(Photo by PR Photos)