Place this clip just before the risky choice, then follow the fallout with the Fail Sound Meme for the payoff. For a bigger build-up, open with It Was At This Moment He Knew, then let this warning land second. The Darth Vader No Sound also works as a second objection when one warning is not enough.
About this sound
This ten-second voice clip delivers a firm, drawn-out objection built around the words “no, don't do that.” The speaker sounds serious and unsettled, as if trying to stop someone just before a reckless or embarrassing choice. That stretched, uneasy delivery makes the warning feel tense rather than playful, building anticipation while the listener waits to see whether the mistake happens anyway.