magsplaining 

Stating accurate, verifiable facts. Especially when these facts are inconvenient to an idiots worldview, or contradict idiotic talking points.

example magsplaining:
I once had a roommate who tried to trick the air conditioner
They also panicked that they had broken it because the “number kept changing randomly” since it changed when they pressed the buttons, changed again moments after, and then gradually changed over time. I had to tell them that the first number is the temperature setting, the second is the current temperature, and the gradual change is the current temperature changing.

magsplaining by squadron leader bigglesworth January 11, 2019

milsplaining

milsplaining (blend word ‘military’ & informal form splaining of gerund ‘explaining’) is pejorative term meaning "(of a squaddie) to comment on or explain something to #civvy in condescending, overconfident, often inaccurate or oversimplified manner"
It is total bravado based on a rigid hierarchy where people have to do exactly as you tell them even if you are an utter knob. Civvies don’t give a shit about rank & will tell you to poke it.

I’m not #milsplaining you thick Civvy twat, I’m giving you guidance based on my considerable military knowledge gleamed from Commando comics & years of mucking other military around. I have zero knowledge of real world but if I shout & point, you will have to do what I say!

milsplaining by Bumsnorkler December 4, 2019

Maxplaining

Max Verstappen explaining things to his fellow drivers

Ahh there goes there's Max Maxplaining Charles again!

Maxplaining by Omgjustgivemeanyname September 22, 2022

Mannsplaining 

The gritted teeth repetition of facts from a scientist forced to contend with the myths of morons all the livelong day.

"Michael's having a bad day on Twitter; he's gonna graduate from Mannsplaining to murder pretty soon."

Mannsplaining by Recovering Pagan April 20, 2020

Mathsplaining 

When a mathematically capable person explains a math problem to a less mathematically capable person, typically in a manner regarded as condescending or patronising. Like mansplaining, except that it actually exists.

Math HL student: "Uh, you can't get the square root out of a negative number. Unless you're using irrationals"
Math studies student: "Stop mathsplaining to me!"

Mathsplaining by FanterPanter December 10, 2017

Maxsplaining 

When you trap your life long formula one rival in order to explain every little detail about your race or quali session to them without a chance of escape.

Not to be confused with Mansplaining, while similar, Maxsplaining presents clear homoerotic undertones and heart eyes from both parties involved.

person 1: where's Charles?
person 2: oh, Max got him, he already started the maxsplaining
person 1: damn, that's a shame, there's no saving him now...

Maxsplaining by not-my-name October 11, 2022

Meta-Mansplaining 

When frustrated manly men go and flood the Urban Dictionary with their definitions of the word Mansplaining, because they know it better than the feminists, actually.

Greg is so pissed off because his professor didn't want to hear him explain her area of expertise to her in his opinion, so he went meta-mansplaining in UD and invited all his friends too. (See mansplaining )

Meta-Mansplaining by Chnuma September 7, 2017