Place it near the end of an edit, just after the confusing moment, then follow it with Bruh for the reply or Fahhh for the next beat, keeping it as the setup and the second sound as the payoff.
關於此聲音
Etsech is a short meme clip lasting about seven seconds, built around one distinctive vocal sound that carries the whole clip. It feels odd, playful and deliberately awkward, landing as a surprise and making a quiet moment feel stranger. People reach for it when a normal reaction would feel too plain, using its strangeness to add humour without saying anything else.