Supermarket chain Iceland will give 10 vouchers worth £500 each to shoppers who can produce the best Noddy Holder impersonation.
Holder, whose iconic shriek of 'It's Christmas!' made Slade's 'Merry Xmas Everybody' a festive hit in 1973, is working with the supermarket nearly five decades later.
He has appeared in their Christmas advert decked out in his pyjamas and paper hat.
People who want to win a voucher should visit Iceland's TikTok or Instagram and find the post inviting you to perform your best impression of Holder's iconic "It’sss Chriiisssstmas!" line.
Creativity and passion are highly recommended.
Use the hashtag #LandOfItsChristmas and make sure to submit your video by Tuesday, December 20.
The best 10 will receive a voucher before Christmas Day.
Iceland also said the voucher could be used alongside any deal available in any shop.
Iceland has been active recently trying to support customers through the cost of living crisis.
Richard Walker, managing director of Iceland, urged supermarkets in November to show "responsible capitalism" and reduce prices – even if it means a hit to company profits.
"I think [there should be] responsible capitalism, I think businesses [should be] accepting lower or no profits," Walker told BBC Radio 4's Today programme.
"800,000 kids living in poverty don't qualify for free school meals," Walker added.
"The easiest way to reach them is through the universal credit scheme, but also through businesses".
Food inflation has soared this year and is currently around 16%.