Jack Black has admitted to a “lost weekend of drink and drugs while filming for King Kong.

The actor – who plays filmmaker Carl Denham in the movie – said he is usually well behaved while working, but got out of control on one free weekend.

"Overall I'm very responsible on set. I'm not one of those dudes who come drunk to the set, he told GQ magazine. “But there was a lost weekend where I had a little time off and I did some Ecstasy and I went on a kind of crazy rampage and I started smoking."

"Me and another member of the cast, who will remain nameless, just running around, dancing around, drinking and Ecstasizing, smoking like a chimney, he continued. “And then it was over."