Will Ferrell had Holly Willoughby in stitches after revealing the X-rated memorabilia he took from a previous film set.

During Tuesday’s This Morning the Elf mega star and actress Octavia Spencer spoke about their latest Christmas flick Spirited,the 40-year-old presenter asked the Hollywood stars if they had stolen anything from set.

Addressing his 2008 comedy Step Brothers, which features a pretty grim scene where Will’s character Brennan rubbed his testicles on stepbrother Dale’s (John C Reilly) drumset, the 55-year-old confessed that he keeps the risque prop somewhere ‘special.’

‘I have some interesting mementos from some of my films, but the most valuable one is from Step Brothers – some testicles!,’ he said.

‘The testicles I put on a drum set, and I bring them out for dinner parties. I have a special box I keep them in.’

The cheeky admission had hosts Phillip Schofield and Holly Willoughby in fits of laughter, with Holly hailing it ‘so amazing.’

Will likes to surprise his dinner guests with prosthetic testicles, because why not! (Picture: ITV)

Says it all really (Picture: ITV)

During Monday’s The One Show, the Daddy’s Home actor revealed that he was convinced his 2003 beloved Christmas film Elf wouldn’t be a hit.

‘At the time, as I was running around New York City in my yellow tights, I was thinking, “This is gonna be my last movie”,’ he laughed.

‘Little did we know, we were making a movie that would stand the test of time, and people love it.’

Will keeps the prosthetics in a ‘special box.’ (Picture: Sony Pictures)

And it looks like Will is full of Xmas cheer lately as his iconic character Buddy has been featured in Asda’s festive advert.

In the clip he gets a quick tour, with one of his new colleagues first taking him to one of the most magical places – the bakery.

Clearly in awe of the icing sugar being sprinkled onto the mince pies, he exclaims that what is unfolding is ‘beautiful’, much to the delight of the bakers.

Like the movie, he stays up decorating the whole place and the next morning his efforts are rewarded when he’s told he’s got the job.

Fans of Elf couldn’t contain their excitement over seeing Will reprise the beloved role, with one commenting on the advert: ‘How have they done this?! It’s amazing! Couldn’t stop smiling. Smiling’s my favourite!’, of course referencing Buddy’s line from the movie about smiling.

More: Trending

‘What an ad! 👏🏼 Just love buddy the elf, wouldn’t mind bumping into him in my local Asda!’ another added.

This Morning airs weekdays at 10am on ITV.

Got a story?

If you’ve got a celebrity story, video or pictures get in touch with the Metro.co.uk entertainment team by emailing us [email protected], calling 020 3615 2145 or by visiting our Submit Stuff page – we’d love to hear from you.

MORE : Will Ferrell is back as Buddy the Elf for the first time in 20 years in Asda’s Christmas advert

MORE : Will Ferrell admits he thought Elf would be his ‘last movie’ as he expresses love for iconic Christmas film 20 years later

‘I have some interesting mementos from some of my films.’