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Watch the 'Scream' star as he battles against the clock to name as many nuts as possible in 30 seconds.
Usher has taken Capital FM's Nuts Challenge to see how many nuts he could name in 30 seconds.
The 'Scream' star dropped by Capital to take the test that has been baffling some of the biggest pop stars on the planet, including Justin Bieber and Lawson.
Usher got off to a strong start with his nuts, but found it tough going as time slipped by.
You can watch Usher 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.