Gemidao do Zap, which translates as the WhatsApp moan, spread through Brazilian WhatsApp groups in the mid 2010s as a bait and switch prank audio. Senders disguised it as an ordinary voice message, a news clip or a volume test, so the loud moan played out in quiet rooms, buses and workplaces. It quickly moved to YouTube, soundboards and meme edits, and became one of the most recognised Brazilian prank sounds online, still reused whenever creators need an instant awkward moment.