Place it near the start of a short pony edit, just after the setup, then follow it with Bruh for a deadpan reaction and Goofy Ahh Sounds to keep the joke going.
關於此聲音
This is a short fan-made voice line written for Rainbow Dash, lasting just under four seconds, delivered as a playful spoken line about ten sour apples. It feels deliberately silly and light, the kind of dumb joke that lands because it is so plain and unexpected. The uploader made it as a custom Rainbow Dash line rather than taking it from the show.