Place this clip right after the counting moment in your timeline, then follow it with the bruh soundboard button for a deadpan reaction. If the mistake needs a bigger payoff, swap that second slot for the emotional damage sound button instead.
このサウンドについて
This is a very short 0.7 second voice clip of a childlike voice saying 'twenny wan' instead of twenty one. The mispronunciation lands as sweet and silly rather than mocking, giving listeners a quick, light laugh from how confidently the number comes out wrong in such a tiny burst.