9 and 10 is 21 Sound Effect Shared by Krabby Caption ThisMix AudioTrim AudioDownload AudioDownload VideoFiled UnderMemes, Sounds, 1 5 0 0 This is that viral audio clip where someone confidently states that 9 and 10 equals 21. It’s become a meme sound for when someone says something hilariously wrong or just totally out of left field. Embed <iframe src="https://soundfactory.ai/9-and-10-is-21-sound-effect/embed/" sandbox="allow-top-navigation-by-user-activation allow-top-navigation allow-scripts allow-popups" width="100%" height="112" scrolling="no" frameborder="0" marginwidth="0" marginheight="0"></iframe>
