Use it just after the forgotten line or failed answer, then follow it with a long brain fart for a bigger blank or a fart with reverb to stretch the same gag. Keep it as the punchline in a short fail edit, before any reaction sound that comments on what just happened.
À propos de ce son
This is a very short brain fart sound effect, lasting just 261 milliseconds, made for the moment a thought slips away completely. It feels silly and awkward in the best way, turning a forgotten idea into an instant laugh. It works as a light, self-deprecating reaction to a slip, a wrong answer or a sentence that suddenly goes nowhere.