Place it at the cut from the calm setup shot to the reaction shot, not under dialogue. Follow it with a startled reaction sound for the person outside the door, then end on a deadpan clip if the joke needs a second beat.
关于此声音
This is a nearly five-second burst of a desktop computer firing up, with fans surging, drives whirring and a deep hum taking over. It feels funny and tense at once, like getting caught doing something in a silent house at night. It comes from TikTok gaming edits built around late-night sessions and the among us 3am meme idea.