Place it at the exact reveal in the edit, after the setup has shown the outfit or framing clearly. Follow it with a bruh reaction for disbelief, then an emotional damage sting to close the embarrassment and keep the focus on the person caught out.
About this sound
This roughly ten-second Spanish voice clip delivers the blunt line telling Joaquín that a private part is showing, spoken directly and without softening. It feels awkward, teasing and suddenly exposing, turning a small visual slip into a joke everyone recognises at once. The direct address makes the warning feel personal, while the short pause for reaction lets the embarrassment land before the moment moves on.