The line comes from Reggie Fils-Aimé, the former president of Nintendo of America, who said 'My body is ready' while demonstrating Wii Fit at E3 in 2007. The earnest delivery made the moment memorable, and clips of it spread across forums, video sites and social media as a reaction to anything demanding preparation. The deliberately misspelled form 'readee' became a playful online variant of the quote. It endures because the phrase is short, instantly recognisable and flexible, working as both sincere hype and gentle self-mockery before a difficult task.