Jack Black grew up in a commune where his parents were involved in an X-rated threesome. The King Kong star says his mom and dad joined the naturist camp to patch up their rocky marriage - and ended up sharing their bed with another woman.
He told GQ magazine: "My parents met this other woman who ended up coming and living with us. In the same bed."
The actor also claims the camp's residents were encouraged to bare all everyday. It isn't the first time the Hollywood funnyman has spoken out about his troubled childhood.
Last year Black admitted he was such a difficult teenager, his parents were forced to take him out school. The star was sent to a specialised school after dabbling in drugs and stealing.
He said: "I took some drugs in high school. I was doing cocaine and I was too young. What the hell was I doing? And I sniffed some glue. I was on a rampage.
"Also, there was this guy at my school who wanted to kill me 'cos I made out with a girl he liked, so by about 15 I was in full meltdown."
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