Place it immediately after the failed boast or excuse, then follow it with Bruh as the next reaction and Emotional Damage when the target tries to recover, keeping the sequence short so the verdict stays the centre of the edit.
About this sound
This is a short Portuguese spoken line, 'Os cães não poupam ninguém,' lasting about three and a half seconds, delivered as a dry meme remark. It feels teasing and merciless in a playful way, like a verdict that leaves nobody out, which makes it land best as a reply to a small failure or an overconfident boast.