The line comes from Yu-Gi-Oh! 5D's, the third Yu-Gi-Oh! anime series centred on duelling and set in a futuristic city, and its Japanese wording became a quotable reaction among fans. Clips of the shout circulated on video sites and soundboards in Japanese posts tagged with the series name, often paired with duels and incomprehensible plays. Because the emotion reads clearly even for viewers who do not speak Japanese, editors kept reusing it outside the fandom as a general sound for confusion, and it remains a staple anime reaction clip.