Short question clips like this became popular on soundboards and in short-form video because a single confused line can react to almost anything. The who said that phrase spread as a reusable reaction in edits, gaming highlights, and meme compilations where an unexpected comment needs calling out. Its brevity and clear delivery made it easy to drop into different contexts without explanation, and it remains used for moments of disbelief, suspicion, or playful accusation when someone hears something surprising from off screen or in a group chat.