The Cadbury's eyebrow advert had a chokehold on everyone in the UK - from schoolchildren in the playground to grown men in pubs.
You'd tap your feet to the tune of Freestyle's Don't Stop the Rock while trying to master the brow 'dance' in the mirror that those two little kids seemed to do effortlessly.
I think we all spent longer than we'd like to admit giving it a go.
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Well, it turns out the whole country was wasting their time, as the star of the 2009 advert has revealed it was fake all along.
Have a look for yourself:
Georgia Wake was the wide-eyed youngster dressed in the Dairy Milk-purple pinafore who made her eyebrows dance.
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Or so we thought.
At the age of nine, she sat alongside little Bradley Ford to show off their alleged talents in front of a miserable grey background, raising their brows exactly on beat.
But now she's all grown up, Georgia decided to come clean about her iconic Cadbury's role and confessed it was all a 'lie' - and how they really filmed it.
People have accused her of 'ruining their childhoods' after she revealed that her brows aren't especially flexible.
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In a TikTok video, the brunette duetted a clip of the 14-year-old Cadbury's advert and wrote: "When you lie to the nation about your eyebrow talent."
She also captioned the clip: "How times change. Nine-year-old me was thriving."
The news didn't go down well with Brits who had staunchly believed the two kids were freakishly talented.
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One commented: "My childhood was a lie."
Another wrote: "IT WASN'T REAL?"
A third fumed: "This advert had me in a chokehold, I finally learnt how to raise an eyebrow each it only took me six years to master it. To find out I was living a lie."
A fourth added: "Eight year old me is so p***ed off right now."
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And a fifth chimed in: "I was 100% convinced I could have robbed you out of a job I spent ages getting Amelia Clark levels of expression. And you're telling me it was FAKE?!"
Others applauded Georgia for keeping tight-lipped about one of TV's best kept secret for so many years.
Some called for her to recreate the advert and wanted to find out if she was still in touch with her Cadbury's co-star.
Georgia later explained how she faked her wriggly eyebrows with a behind the scenes image in a follow up video, after her initial post went viral.
She said: "You can see up here on my eyebrows I had like four little pads - two on each eyebrows - and then it was fishing wire and lolly pop sticks.
"I had a man behind me pulling them up and down.
"It took a lot of rehearsing, from what I remember it was about four days of filming."
Thanks to her uber convincing performance, Georgia went on to score roles in an episode of both My Family and Holby City.
Topics: Food And Drink, TV and Film, TikTok, UK News, Weird, Viral