Classic Caillou is a fan-made, misbehaving version of Caillou, the young character from the children's animated series, recreated by users in GoAnimate, now known as Vyond. In the platform's large community of grounded videos on YouTube, Classic Caillou is frequently punished for bad behavior, and his exaggerated crying became a recognizable shorthand for tantrums. Editors later lifted the cry from those videos into memes, reaction clips and short-form edits, where it still works because viewers instantly recognize the character and the over-the-top punishment humor behind him.