TOPIC: Where did the term "computer bug" come from?
Did ya ever wonder how the term "bug" came to be used in association with problematic computers or their associated program code? Well, here's the true story...

The term "Bug" is widely known to be an error or problem in software and hardware systems. The term originates at Harvard University in August 1945 when the Mark I computer project staff notice something is wrong with one of the computer's circuits. After a lengthy search, someone locates and removes a two-inch moth from one of the computer cabinets. From then on, computer problems are referred to as bugs.

Source: Computer History Snapshot