Place it right after the gross reveal, then follow with Emotional Damage for the aftermath and Scream Meme when the reaction escalates, letting each reaction land before the next one starts.
このサウンドについて
This is a short Portuguese voice clip, lasting about two and a half seconds, in which a voice says it is about to vomit. The blunt delivery makes it feel queasy, dramatic and instantly funny, like a warning shouted just before the worst happens. It is the kind of line that lands best when disgust needs no explanation.