The 'Cosmo Yelling' meme, also known as 'His Name Is X', originates from the animated Nickelodeon series The Fairly OddParents. The template features the character Cosmo in a state of high-intensity, wide-eyed screaming, which fans originally clipped to showcase his chaotic personality. It evolved into a popular reaction image used to humorously convey an aggressive or overly passionate correction of someone's name, a niche fact, or a specific brand. Because of Cosmo's exaggerated facial expression and the sheer volume the image implies, it remains a go-to choice for social media users who want to 'shout' their point across in a ridiculous and nostalgic way.