The Yamaha XJ6 is a middleweight naked bike launched in 2009 and especially popular in Brazil, where cortando de giro became street slang for holding the throttle open until the limiter cuts in. Short phone recordings of owners doing it at meets and on streets spread widely through YouTube, TikTok and WhatsApp groups, turning the specific scream of the XJ6 into a recognisable bragging sound. Riders still use it to signal speed and status, even when the bike on screen is not an XJ6 at all.