This line comes from Annoying Orange, the long-running YouTube comedy series built around a loud, wisecracking orange who teases the other fruit in the kitchen. Its deadpan dismissal fits the show's humour perfectly, which is why the clip travelled beyond the episodes themselves and became a handy reaction sound on meme pages and soundboards. Creators keep reaching for it because it says in a few seconds what a whole comment would take to explain: the joke did not work, and everyone knows it.