This fun AskReddit thread has people describing times that experts dunked on oblivious challengers. It can be a deeply humbling experience for one to realize that they've challenged an expert, soon as things get underway. Whether it's video games, swimming, or a landlord expecting that the tenant wouldn't be a construction worker with just the kind of knowledge that could cut through their thin layer of BS; experts know where it's at.
expert
The anonymity of the internet allows a lot of people to pretend to be experts on things, as well as pass massive judgement and throw accusations around like a furious ape tosses fresh hot crap. Here are times that people were sorely mistaken and didn't realize they were talking to someone who knew a hell of a lot more then they did. Sometimes these end decently, like when the writer of Men in Black was told not to mansplain Men in Black.
