Charlie the Unicorn began as a short Flash animation by Jason Steele in 2005, following a weary unicorn named Charlie who is repeatedly led into strange adventures by two enthusiastic unicorns. The series spread through Newgrounds and early YouTube, becoming one of the defining viral cartoons of that era. The greeting became a recognisable catchphrase because it instantly evokes Charlie's exasperated world, and creators still reuse it to signal a sudden, silly interruption in modern memes and edits.