This has been a great conversation, thanks to those that have participated.
So, for me, “mansplain” has meant the following:
I’ve spent a long time doing my job and mentoring subordinates. I have a lot of history and a lot of ideas, knowledge and theories to share on virtually any subject tangentially related to my field. I often find myself launching into overly long or complex digressions or leaps down the metaphorical rabbit-hole of discussions and need to check myself to ensure that I’m having a discussion, not lecturing. I’m betting I’m not alone in this - I’d wager that anyone whose job revolves around either gathering information or teaching needs to check themselves from time to time mentally!
But, while I am guilty of this behaviour, it has tended to be because I have a lot of information and like to share it when I find an interested audience, not because I believe the audience to be “beneath” me on some level.
Where I believe this behaviour crosses into “mansplaining” is when someone takes gender, consciously or otherwise, as one of these traits that put the listener “beneath” them. Because I work in tech, this is all too common.
For example, I see instances of female developers who, when choosing to ask questions of a colleague, being given answers that assume a novice level understanding of a given subject. A male counterpart asking the same question would often instead be answered at a “peer” level of skill, and answered in a fashion more appropriate to that perceived status.
Another common example my partner has relayed to me is in gaming. She often chooses male avatars or to not use voice chat options because this often avoids messages from men who feel the need to explain her role, class, or abilities to her, often despite the fact that she has already been using these skills or abilities effectively.
In other words, there is a close tie between misogyny (conscious or otherwise), and mansplaining. Because women are assumed to know less or understand less, discussions intended to “teach” seem to start at a much more novice level than the same discussion would with a male listener.
I think the reason this behaviour is so widespread is that, IMHO, many of these men are approaching the discussion from a genuine desire to help - they believe stepping back and having these conversations from a “simpler” or “more basic” level is helping, not patronizing. And I think this is why, for these men, being called out about the behaviour often results in such strong reactions.
As a man, this term is not mine to define. This is, however, how I’ve interpreted its meaning in my own life and interactions.