The 'And his name is John Cena' gag comes from WWE, where John Cena's entrance theme 'The Time Is Now' has introduced the wrestler since 2005. Around 2015 the internet turned it into a bait-and-switch prank, cutting a quiet clip with a sudden blast of the theme and the shouted introduction. Portuguese-speaking creators adopted the same format with lines like 'o nome dela é John Cena.' It endures because the interruption is instantly recognizable and works in any language without needing context.