Renato Cariani is a Brazilian bodybuilder, coach and fitness creator whose training videos and motivational content made him widely known in Brazil. Fans began clipping his distinctive, hearty laugh and sharing it as a meme across social media, where it became shorthand for amusement, gym humour and playful mockery. Because the laugh is so recognisable and works without any context, it continues to appear in short edits, reaction videos and group chats, especially among fitness fans who already know Cariani's larger-than-life personality.