This sound is widely recognized from Annoying Orange, the comedy web series built around a talking orange pestering other fruits. The “Hey Apple” line became one of the series’ most quoted moments and spread through early internet meme culture, parody videos and short edits. It is still used because the setup is simple and instantly understandable: one voice keeps needling another character until the joke becomes the joke. That makes it useful for reaction memes, repetitive captions and deliberately annoying punchlines.