There was a time when it was one of the biggest and best shows on television - Malcolm in The Middle told the story of a dysfunctional family in middle America and their struggles with everyday life.
For millions of children who watched the hit comedy however, it was an all-too-real reminder of what life was like as a younger sibling, constantly on the lookout for when your older brother might decide to give you a good hiding.
To this day the show remains a classic, with groups of friends the world over still playing the famous 'circle game'.
And if the fans remember the show, you would think the people who actually starred in it would have some recollection - I mean it ran for six years.
Yet after a photograph of the three warring brothers - Malcolm, Dewey and Reece - was shared on Twitter, the sitcom's main star Frankie Muniz, who played the title role, broke the hearts of fans the world over after he claimed not to know what the fan was talking about.
The original photo was sent with the caption: "Only the real remember this show."
After spotting the nostalgic pic, Muniz replied: "Hold up... What show was this?"
Understandably die-hard fans were quick to comment on the post, with many finding it hard to look at after so many years.
One person wrote: "Damn this broke my heart and made me laugh."
Another said: "You can't joke like that."
"One of the best shows in the history of television. I miss it..." a third said.
Don't we all, mate, don't we all.
And though Muniz, now 33 - feel old yet? - was clearly joking, one fan decided to give the former actor a quick run down of the series and what his role actually was.
A concerned fan said: "Malcolm In The Middle'. Not sure if you're joking, but you were the main character and it was a really good show."
In 2016 Muniz - who now runs his own olive oil business - revealed that in fact he remembered very little about working on the show and had never even seen an episode before.
The show ran for six years and was a hit with siblings the world over. Credit: Fox
At the time he admitted that he ended up binge watching the entire thing over a single summer.
Offering support to his former co-star, the show's Bryan Cranston (yes, he of Breaking Bad fame) said: "I told him not to worry about what you remember and what you don't remember. They're still your experiences.
"That will be my job. I will tell him, 'Remember this? Remember that from Malcolm? What a life for you.'"
Featured Image Credit: PA/Fox