If you’re going to criticize or call someone out on something, it’s probably best to know who you’re talking to. Because, as you can see from this hilariously cringeworthy list put together by Hiptoro, all kinds of awkward situations can happen when you don’t do your research first. From a know-it-all telling J.K. Rowling she was wrong about why Severus Snape died to a clueless smartass asking the Prime Minister of Malta where he got his information when he tweeted about a possible hijacking, the examples below are a good reminder that if you don’t know who you’re talking to, you might want to keep your opinions to yourself. Don’t forget to tell us your favorite one!