C00lkid is a mischievous character from Roblox meme culture, known for teasing, childlike lines that turn a simple game into something slightly creepy. The tag, you're it line captures that idea in one short phrase, which is why short clips of it circulate on soundboards and in short-form edits rather than as part of a longer scene. Creators keep returning to it because it is instantly understood, even by viewers who do not know the character, and it can turn almost any chase, catch, or surprise moment into a joke.