The 'I'm Gonna Stop You Right There' meme features the iconic mascot of the Fallout video game series, Vault Boy, holding up his hand in a dismissive gesture. Originating as a reaction image, it gained massive traction on platforms like Reddit and Twitter to humorously shut down someone who is about to say something nonsensical, offensive, or simply annoying. It perfectly captures the energy of an immediate intervention before a situation gets worse. While the phrase itself is a common idiom, the combination with Vault Boy's cheerful yet firm expression makes it the ultimate tool for online rebuttals and shutting down 'bad takes' across social media.