Place it immediately after the reveal or bad take, so it answers the moment on screen. Follow it with a short confused reaction sound, then a bass drop for the punchline, keeping the sequence tight around the person being called out.
About this sound
This 3.6-second Russian voice clip fires off a blunt, profane question asking who the idiot is, delivered in a fast, hostile burst. It feels like irritated disbelief mixed with absurd anger, the kind of outburst that lands when someone says something baffling. Even without understanding Russian, the tone alone makes the frustration and confusion instantly clear.