Jonah Hill didn't enjoy the airplane orgy scene in The Wolf Of Wall Street because he spent the day with a group of sweaty naked people and got to know his sex partner a little too well.

The actor admits many friends have asked him about the raucous scene in the Martin Scorsese film, because they're convinced it must have been a lot of fun - but he insists it was anything but that.

He explains, "It was the most unhygienic scenario I've ever been in... It was like an 18-hour day in this enclosed airplane set and there's a guy's b**ls, like, three centimetres away from you. Usually when I have a guy's b**ls three centimetres away from me I'm not on an airplane."

And Hill reveals the actress cast to perform fake fellatio on his Donnie Azoff character was a mother of two young kids.

He adds, "Her head would be down there and she'd be like, 'The transition from pre-school to kindergarten is so hard on them'. And you're like, 'Yeah, that does seem challenging!'"