Place it just after the unwanted entrance, once the intruder is fully in frame, and let it be the clear turning point of the scene. Lead in with a sudden suspense sting for tension, then follow it with Nelson's Ha-Ha for a mocking finish that keeps the joke on the person leaving.
关于此声音
This four-second clip is a loud Portuguese voice shouting “Sai da minha porta!”, a blunt demand for someone to leave the doorway. The delivery is sharp, angry and deliberately over the top, so it lands as confrontational rather than calm. It works best as a sudden comic outburst, turning an unwanted interruption into an instant, unmistakable rejection.