pedantic sexism
When a man critiques/criticizes a small detail of something a woman has said or done and mansplains at her about it, either "correcting" her or shaming her for being "incorrect" somehow. Importantly, the gendered nature of the interaction indicates he would not have made any comment, or would have been less rude about it, if the woman were, in fact, a man. Bonus points if there are examples of other errors, or more egregious ones, by men in the same situation at that moment (i.e. comments on a discussion forum or a group of people talking).
Anne says, "I have only the best vegetables in my basket!" Tom says, "So do I! Look at these ripe tomatoes we both have!" Roger points at Anne and says, "Anne, don't you realize tomatoes are fruits? There are tomatoes in your basket, so you can't say you have only vegetables in your basket, now can you?" Anne says, "Wow, Roger, what a great example of pedantic sexism! I love how you go after me about tomatoes, when I wasn't even the person to mention them!"