Place it as the final beat of the edit, right after the main moment ends. Start with a bruh reaction to set up the exit, then let this clip close the scene with nothing placed after it in the timeline.
關於此聲音
The clip is a single drawn-out voice saying baiiiiiiiiii, stretched across almost eight seconds instead of a quick bye. It sounds like SpaceHamster dragging out the goodbye for effect. The feeling is playful and over-the-top, turning a simple exit into a funny, dramatic moment that keeps going longer than anyone expects.