Yes. It happena when a guy feels at a loss socially and he feels like he's supposed to be in charge of the situation or he will somehow be lessened if he doesn't act, etc.

Hardly anything in life is 100%, especially in things dealing with life. Life is wonderfully chaoric, amorphous, and even sometimes 'protoplastic' in its patterns (meaning patterns sometimes weirdly jut out).

But it is prevalent amongst men. And the 'ingenue' role is prevalent amongst women.

My dad for mansplained to by a 13 year old boy on the internet about giant pumpkins. All the points line up.

*The assumes expertise, "helpfully" offered to cover awkwardness.
* The acceptance of said exoertise simply because the reapondant is presenting himself as an expert.
* The questions asked so respectfully because you want that expertise to enhance your own skills. And it's so cool to talk with someone as knowledgeable as you on a niche topic, right?
* The inkling that this guy is not that big of an expert because something was said that punctures that bubble you're in.
*The pointed question. Still so respectful, because you've for to be losing your mind. You've missed something. You're the problem He's an expert!
*More brain niggling.
*The reveal. He's a 13 year old who's never planted anything in his life. He's just regurgitsting someone else's expertise as though it's his.
*The fallout. You've been had. Is this punk kid trying to shine you on or is he just lonely and teyinf to make friends? Awkwardly.
*Why did you assume he was an expert? He never actually said he was.
*Why did you respond to assumed expertise as though you're in the throes of a schoolgirl crush?
*The resolve. Bah humbug. Joan Jett. Live and learn.

It's been years and he still tells this story. Funny as hell.

Mansplaining is aggravating. It's also funny.

Professionally though, it's just straight sexism.