Place it just after the cooking mishap peaks, then follow it with Emotional Damage for the fallout and keep Oh My God Meme for a second, bigger reaction later in the same edit.
About this sound
This short voice clip opens with a startled 'oh my god, Ratatouille' and then slides into a drawn-out, sing-song na-na-na chant. The sudden gasp gives way to something silly and light, making the whole moment feel playful rather than serious. It lands best as a quick burst of mock shock, the kind of sound that turns a small surprise into a joke.