Place it right after Yohan's line in a short back-and-forth, so it lands as the reply, then add No No Wait Wait if he keeps talking, or Oh My God Wow for the next reply in the exchange.
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This is a very short voice clip, lasting under a second, in which a speaker tells Yohan to shut up in a blunt, direct way. It feels funny and dismissive, like a quick shutdown in the middle of a noisy argument, and it works because the name makes the target clear instead of leaving the remark aimed at nobody in particular.