Smile.jpg, also known as Smile Dog, is one of the internet's most enduring creepypastas, dating back to the early 2000s on 4chan. The legend tells of a cursed image of a Siberian Husky with a sinister, human-like grin that causes insanity and nightmares unless the viewer 'spreads the word' by sharing the file. In meme culture, it serves as a cornerstone of the 'cursed images' genre, often used in shock humor, bait-and-switch videos, or to evoke nostalgia for early internet urban legends. Today, it remains a popular template for surrealist memes and digital horror parodies that play on the eerie nature of the original lore.