Put this clip at the reveal itself, after the visual gag appears and before your reaction shot takes over the sequence. Follow it with the anime wow sound for a second anime punchline, letting the first reaction finish before the next edit point arrives in the timeline.
About this sound
This clip, just over two seconds long, is a Goku-style voice shouting the Portuguese line “mas que porra é essa,” roughly “what the hell is this.” It feels sharp and incredulous, mixing confusion, disbelief and annoyed shock in one burst. Even listeners who do not speak Portuguese read the reaction instantly, which makes the absurdity on screen feel even bigger.