The Wario's Nipples Debate erupted following the 2017 reveal of a shirtless Mario in Super Mario Odyssey, which confirmed that the iconic plumber possessed nipples. This seemingly minor detail sparked a massive internet investigation into why his rival, Wario, appeared nipple-less in various games like Mario Tennis Aces. Fans and internet trolls began creating elaborate charts, 'scientific' analyses, and heated social media threads demanding anatomical consistency from Nintendo. The meme represents the internet's unique ability to hyper-fixate on absurd, minute details for comedic effect, often used to mock pedantic fan theories or simply to celebrate the chaotic nature of the Mario franchise.