Place it immediately after the disappointing moment, then follow it with the Shocked Meme Sound to underline the reaction, or lead into it with the Oh No No No Laugh when the set-up already points that way.
Sobre este som
This is a short, roughly four-second meme clip built around a repeated tutututu vocal line, delivered in a flat, deliberately unimpressed style. It lands as a small, knowing letdown, the kind of sound that makes a failed plan feel funny instead of serious, and it works best when the disappointment is already obvious to everyone listening.