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Watch the 'Boyfriend' star as he lists as many nuts as he can in 30 seconds.
Justin Bieber is the latest artist to take part in Capital FM's Nuts Challenge to see how many nuts he could name in 30 seconds.
The 18-year-old singer took the test when he visited the UK recently to promote his new single 'Boyfriend' and album 'Believe'.
Justin was one of the strongest contests so far, as he listed nuts including peanuts and Macadamia nuts during the challenge.
You can watch Justin taking the Nuts Challenge below and don't forget to let us know how you think he performed by leaving a comment at the bottom of the page.
Watch more artists take Capital FM's Nut Challenge