The 'Gohan's You Retard' meme stems from a specific fan-translation of the Dragon Ball Z manga and anime during the Majin Buu Saga. In this scene, Gohan arrives on Earth after training with the Old Kai, possessing immense power known as 'Ultimate Gohan.' When Super Buu asks who he is, Gohan dismissively insults him before the fight begins. While official English dubs and newer manga editions use milder language like 'You moron' or 'You dummy,' the edgy fan-subbed version became an internet sensation. It is primarily used to mock someone's lack of intelligence or to express extreme confidence during a confrontation.