You know the drill. You see a clip where someone is whispering or the audio is super low, so you naturally crank your speakers up. Then BAM. The video cuts to a scream, a loud sound effect, or a meme song blasting at full volume. That jump scare is the entire joke.
This template is pure chaos. It works best with a slow, quiet buildup that makes the viewer lean in. The sudden loud part is the punchline. Use it for reaction memes, prank videos, or just to make someone jump out of their seat. The volume contrast is what makes it funny.