ROBERT DOWNEY JR is one of the world’s most famous actors.

But even he has his off days.

During an interview with Channel 4 reporter Krishnan Guru-Murthy, Downey Jr took exception to being asked about his past.

Downey Jr, who is now sober, had a well-publicised battle with addiction, and a spell in prison.

But when he’s publicising his movie, he really, really doesn’t want to talk about the past.

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The last thing Downey Jr says to Guru-Murthy? “It was all getting a bit Diane Sawyer.”

Here’s the interview – it starts getting morto from about 5 minutes in.

Channel 4 News / YouTube

Making a difference

A mix of advertising and supporting contributions helps keep paywalls away from valuable information like this article. Over 5,000 readers like you have already stepped up and support us with a monthly payment or a once-off donation.

Read: Robert Downey Jr surprised a young fan with his very own ‘Iron Man arm’>