On September 9, 1947, engineers working on the Mark II computer at Harvard University found a moth stuck in one of the components. They taped the insect in their logbook and computer scientist Grace Hopper reported the "First actual case of bug being found,". The engineers who found the moth were the first to literally "debug" a machine.
The words "bug" and "debug" soon became a standard part of the language of computer programmers.
"I appreciate SDF but it's a general-purpose server and the name doesn't make it obvious that it's about art." - Eugen Rochko