The 'Oi Josuke' meme originates from the fourth arc of JoJo's Bizarre Adventure: Diamond is Unbreakable, featuring the lovable but dim-witted character Okuyasu Nijimura. In the series, Okuyasu possesses a powerful stand called 'The Hand,' which can erase anything it touches from existence. The meme typically follows a specific format where Okuyasu shouts 'Oi Josuke!' to his best friend, explains how he used his stand to erase something inconvenient or nonsensical—like logic, physics, or social boundaries—and concludes with the catchphrase 'Ain't that wacky?'. It gained massive popularity on platforms like Reddit and Tumblr for its absurdist humor and the character's signature blend of destructive power and comedic innocence.