The 'Excuse Me What the Fuck' meme features a distorted, low-resolution image of the Fallout series mascot, Vault Boy, paired with a blunt, incredulous caption. It first gained massive traction on Reddit in mid-2018 as a reaction image to portray extreme confusion, disgust, or disbelief at a bizarre situation. Unlike the standard optimistic Vault Boy, this version captures a sense of modern existential dread and absurdity. It is widely used across social media to respond to illogical statements, cursed images, or unexpected plot twists, making it a staple of internet reaction culture.