João Kleber is a Brazilian television presenter strongly associated online with exaggerated reaction moments and prank-style TV editing. His laugh became a recurring meme in Brazil through reposted clips, reaction videos and WhatsApp shares, then spread into short-form edits as a go-to sound for embarrassment and comic timing. It stays popular because the delivery is instantly recognizable, brief and easy to drop after a fail, much like a bruh reaction or a buzzer.