The line comes from ambient pedestrian dialogue in Grand Theft Auto IV, the 2008 Rockstar game set in a fictional version of New York City called Liberty City. Brazilian players picked up the Portuguese exclamation from random street encounters and began clipping it for videos and soundboards, where its blunt, questioning tone made it easy to reuse. It spread through gaming and Brazilian meme communities as a shorthand reaction to absurd or unexpected moments, and it remains popular because the short clip is instantly recognisable even outside its original game context.