This answer [1] is my favorite as it resonates with many work/life experiences.<p>[1] - <a href="https://security.stackexchange.com/questions/33470/what-technical-reasons-are-there-to-have-low-maximum-password-lengths/33471#33471" rel="nofollow">https://security.stackexchange.com/questions/33470/what-tech...</a>
I like the graphic examples in this question (besides the obvious attempts at answers): <a href="https://stackoverflow.com/questions/1050222/what-is-the-difference-between-concurrency-and-parallelism" rel="nofollow">https://stackoverflow.com/questions/1050222/what-is-the-diff...</a>
At first look I tougth it was brainfuck but it's valid JavaScript:<p><a href="https://stackoverflow.com/questions/7202157/why-does-return-the-string-10" rel="nofollow">https://stackoverflow.com/questions/7202157/why-does-return-...</a>
You can't parse [X]HTML with regex. Because HTML can't be parsed by regex.<p><a href="https://stackoverflow.com/questions/1732348/regex-match-open-tags-except-xhtml-self-contained-tags/" rel="nofollow">https://stackoverflow.com/questions/1732348/regex-match-open...</a>