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Olly Murs tells Joe about the amazing prank the JLS boys played on him during filming for TV show 'Stand Up To Cancer'.
The former X-Factor contestant also reveals he'd like to be an X Factor judge if Simon Cowell wanted him to be.
He says being a runner-up on the show makes him the perfect mentor for new singers.
So check out Joe's exclusive interview here....
Pictures: Eurovision Song Contest in pics
Pictures from the 58th Eurovision Song Contest held in the Swedish city of Malmo.
Denmark win Eurovision Song Contest
Denmark's Emmelie de Forest won the Eurovision Song Contest with her song Only Teardrops.
UK's most streamed song revealed
The Official Charts Company has revealed the most streamed song of the last twelve months was 'We Are Young' by Fun ft Janelle Monae.
Video: Bonnie Tyler rates Swedish things
Bonnie Tyler is representing the UK at this year's Eurovision Song Contest in Sweden. Before she left, Ricky put her to the test on all things Swedish!
Video: One Direction's announcement vid
One Direction have announced they're set to head off on a world tour in 2014!
Watch Newsround
Watch the latest update from Newsround, CBBC's news programme for children.
Video: Top tips on reducing exam stress
Are you worried about preparing for exams? If you are check out our top tips on revision, relaxation and cutting stress.
David Beckham's career in pictures
David Beckham joins Paris St-Germain until June 2013, before retiring from footie - Newsround looks at the former England captain's career in pictures.
New Game: Play our new Reporter Rush game
Send your reporters to the news in time with Newsround's new game Reporter Rush
New Game: Grab the controls and try Master Control Room
Be a live Newsround editor for the week with our new game Master Control Room
Video: The week's weirdest online clips
Newsround takes a look at the top three weirdest news stories of the week.
Quiz: The week's news headlines
How much can you remember about the past week's biggest news stories? Find out with Newsround's Quiz of the Week!
All about our Inventions Competition
Dick and Dom have teamed up with Newsround to launch an exciting inventions competition. We want kids to dream up inventions that solve everyday problems.
Watch Newsround's special programmes
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