This is kinda a F His Life instead of a FML thing.
I made a bug fix some months ago. Since it involved some highly complex use cases, I l wrote my logic down in layman's terms to everyone in the team and emphasized that it may not necessarily cover all cases and must be carefully thoroughly QA'ed. Eventually it did pass through code review and QA and was shipped.
This week, some customer found a use case that was broken by the bug fix, which is not entirely unexpected.
Some idiot low-performing dev at my place decided to use this opportunity to impress the manager. While it's not unreasonable to mention it's my fault, he kept going around emphasizing my bug was causing issues and mentioned my name like 20 times loudly for everyone to hear.
To add to my annoyance, he IMed and summon me frequently requesting input on how to fix it. At one point, I requested the bug from him to get rid of his noise and he refused. Then I did the next best thing by telling him how I I would fix the bug (which is one easy line of code) and he also refused. He proclaimed that he wanted to fix all use cases properly and comprehensively.
Eventually, he got what he wanted and the manager got summoned and I got summoned again. He kept up with his rhetoric on doing a comprehensive fix and I took my sweet revenge on him by proposing he'd compile all possible combinations of usage parameters and write down the behaviour for each - That's a problem of at least 10 dimensions.
To make it sound much easier than it looks, I mentioned it's done commonly in academia and gave several suggestions on how to elegantly brute force a multidimensional task. Suffice to say, the manager liked that suggestion and handed that glorious task to my very surprised colleague.
Given that this guy is a low-performer with no background in multidimensional data analysis, I imagined it's a monumental thing for him to do. Last time I checked on his progress he made no formalization of his dimensions, wrote no scripts to automate his brute-forcing, and created no spreadsheets to help organize his endeavors. All I saw was one big ugly MS word table that looked completely disorganized and very far from complete. Good luck to him.
TL;DR: Co-worker wanted to impress the manager at my expense and it silently backfired on him.