XKCD is a webcomic created by Randall Munroe, known for its humor and commentary on science, technology, mathematics, and relationships. Launched in 2005, it features stick-figure characters and often includes clever, insightful, or absurd observations about everyday life and complex topics. The comic updates regularly, with each strip typically accompanied by a title text that adds an extra punchline or thought. XKCD has gained a large following and is celebrated for its intellectual wit, making it popular among scientists, engineers, and tech enthusiasts.