Ask HN: Ask HN: What bug made you laugh after hours of frustration?

For me it happened back in my junior years. We were about to head home when a bug popped up right before deployment. We ended up staying for hours hunting it down. In the end it turned out to be nothing more than a single period left in the code by my coworker. The IDE we used did not even point to the error.

All that time lost for one tiny dot.