Truck-kun is a fan-given nickname for the recurring trope in manga and anime where a character is struck by a truck and killed, only to be reincarnated into a fantasy world—a genre known as 'isekai.' While the trope has existed for decades, it became a self-aware meme in the 2010s as isekai stories proliferated across the medium. Truck-kun is often joked about as the most efficient 'god' or 'transportation service' in anime, responsible for launching countless adventures by simply removing the protagonist from their original world. In internet culture, the meme is used to represent any sudden, unavoidable force that completely changes one's trajectory or circumstances, usually with an absurdly dramatic flair.