Place it at the exact cut where a calm scene breaks, then follow the reaction with Oh My God Meme for the reply and Emotional Damage for the aftermath. Keep Scream Meme for a callback later in the same edit, so the first hit stays the climax.
關於此聲音
This is a four-second burst of a single loud human scream, pushed to a deliberately exaggerated volume with no other voices, music or effects around it. The sudden peak makes it feel startling and comic at once, like a jump scare that lands as a joke rather than a threat. It works best as a sharp shock, not a sustained sound.