Place it as the closing line of a short exit edit, after the door closes or the chat goes quiet, then follow it with bruh for a second reaction or open with Goofy Ahh Sounds to set up a sillier disappearance before this line closes the scene.
關於此聲音
This is a nearly nine-second spoken meme clip built around the line “oh that brother gone,” delivered in a casual, amused voice as if someone has just noticed another person slipping away. It feels funny and resigned at once, mixing disbelief with a shrug at a sudden disappearance. The delivery makes an awkward exit land as a quick, knowing reaction.