Takes one to know one is a long-running English playground comeback, used for generations to bounce an insult back onto the speaker instead of denying it. Online, the short Jeremy version circulates as a ready-made retort for memes, reaction videos and comment replies, where its brevity is part of the joke. Because the phrase is already familiar to most viewers, creators do not need to explain it, and it keeps working in new contexts, from friendly teasing between friends to playful arguments in gaming and streaming clips.