The line comes from Dora the Explorer, the Nickelodeon children's series built around Dora and her monkey friend Boots, where the fox Swiper regularly tries to swipe items and must be stopped by the audience shouting 'Swiper, no swiping!' In the Brazilian Portuguese dub, Swiper is called Raposo and the warning becomes 'Raposo, não pegue!', preserving the same call-and-response joke. Short clips of the dubbed line later spread through Brazilian meme pages, edits and soundboards, where its scolding, cartoon tone made it an easy shorthand for catching someone in the act.