splainin' 

Originally derived from the TV series I Love Lucy, splainin' is now used by gamers as a put-down to taunt their opponent after a crushing defeat.

After one has been pwned, he/she has some splainin' to do.

Can also be used to describe anyone who looks absolutely ridiculous or obviously has no idea what they're doing.

Dude, i just beat you 8-2 at Fifa '95. You've got some serious splainin' to do.

-I can't tell if that's a man or a woman, but it sure does have a sweet mullet.
-I'd say they've got a lot of splainin' to do.

splainin' by Bartleby J April 25, 2009

'splainin' to do 

A direct allusion to the 1950's American sitcom, I LOVE LUCY. In the show, the American protagonist (Lucille Ball) has a husband (Desi Arnaz) who is Cuban-born, and who occasionally makes some unintentionally humorous gaffes with English. One of these is his curious pronunciation of the word "explaining", which he always pronounces "'splainin'".
A frequent theme on the show was his discovering an entangled deception of his wife's, whereupon he'd intone sternly to her: "Lucy, I think you've got some 'splainin' to do."

Today people use the phrase both as a fond allusion to a cherished TV show, but as a way to imply that another person is at fault with something and needs to come clean.

Example 1. When the rock group successfully showed that their record company had not promoted their poorly-selling album sufficiently, the suits at the company had some serious 'spainin' to do.

Example 2. My Rolex, my computer and my car are all gone... and you've got a bad heroin problem? I'd say you have some 'splainin' to do!

'splainin' to do by david lincoln brooks August 5, 2008

Lucy, you got some 'splainin' to do! 

Saying a person or entity "has some ‘splainin’ to do" (in a Cuban accent) is a humorous way of suggesting that they have done something illegal or otherwise embarrassing.

The catchphrase dates back to the 50's "I Love Lucy" show.

"Dude, asdfghjkl;!!!... why are my briefs pink?? Lucy, you got some 'splainin' to do!"

Lucy, you got some 'splainin' to do! by rickirichardo January 7, 2013

Manager Splainin'

When a manager explains to an employee or to a tenant why things are the way they are at their job or where they live.

I thanked the manager of the apartment complex I live in for manager splainin' to my why my new lease begins on the 28th of November instead of December 1st.

Manager Splainin' by anonymous October 3, 2023

Shame-splaining 

Shaming or otherwise guilting another party for not sharing the same belief or value system as yourself in an attempt to alter their opinion. This can involve haphazard labeling, or insults of the cursory nature.

James engaged in shame-splaining by calling Pete narrow-minded for his beliefs on gun control, before expressing how gun control should work and how wrong Pete was.

Shame-splaining by ModernMichael May 26, 2020

Post-splaining 

Post-splaining- noun, gerund; when your political opinions are so brilliant, clever & flawless, posting them on all social media platforms is required so all the world can know the real truth.

I don't like it when my Facebook friends are post-splaining what I should think about the President's politics

Post-splaining by Mobilepreacher January 21, 2020

Nola-splaining 

When someone tells you how shit you are at something, without acknowledging you’re feelings, or the fact that you don’t care about this opinion.
It’s only Nola-splaining when the opinion is in no way whatsoever constructive or useful

P1: “oh look, I made this drawing”
P2: “it’s really bad”
P1: “what? Why?”
P2: “it just... looks bad.”
P3: “god she’s Nola-splaining again.”

Nola-splaining by Angry friend. August 20, 2019