The clip comes from South African stand up comedian Casper de Vries, whose delivery turned a plain admission into a reusable reaction sound online. Short excerpts from comedy performances are often lifted for soundboards because a single line can carry a whole mood, and this one spread in that format as a quick reply to explanations and belated understanding. It remains popular because the wording is instantly clear even without context, so creators can apply it to school, work, gaming and everyday mix ups without needing to set up the original joke.