Ok boomer 

A reply given by zoomers and young millennials to anyone on the internet once they realize that they are a generational minority and will have to wait their turn until they become relevant enough to change American culture. A normal reply to this would be 'Ok loser,' or L.

The internet: You can't just will your opinions into existence.

NPC: Ok boomer! :'(

Ok boomer by boriderechista November 8, 2019

Mini Boomer

A mini boomer is a child or a tween who isn’t up to date with our culture yet. A mini boomer and a boomer aren’t up to date because they are on social media less or if they do they watch toy reviews or videos of their granddaughter Karen and her newborn.

Ah, my young sibling you don’t know what TikTok is, You are such a mini boomer.

Mini Boomer by Second MB November 11, 2019

Ok boomer 

1. Used by willfully ignorant individuals,

namely millenials, to dismiss

conventional wisdom as "insensitive"

or "out of touch" with reality.

2. Coded phrase. Means "I'm a

cunt".

Mom: Put on some pants, its -20 outside.

Kid (i.e. millenial, perpetual dependant): Ok boomer.

Ok boomer by Keefy Greens January 30, 2020

Ok Boomer 

The "ok boomer" phrase is an internet joke that is used as a method of dismissing those with stereotypically older or outdated mindsets and opinions that are entirely false or generally bad for society such as racism, sexism and homophobia.

It goes beyond ignorance and refers to those who simply don't want to change.
By saying ok boomer, more open minded are saying "okay we heard you and you are entirely incorrect, hurtful, etc but we have better things to focus on rather than give you an explaination to something that you will simply dismiss." Instead, we dismiss the boomer.
Boomers can be any age, but are primarily part of the baby boomer generation. Not all baby boomers are subject to "ok boomer" (I.e. Danny Devito, who despite being in the baby boomer generation is very open minded and accepting. Not a "boomer.")

A 20 year old homophobic man is a boomer.
Racist 30 year olds.

An 80 year old who is not hurtful to society with outdated opinions? Not a "boomer".
There are open minded older folks and close minded younger. This was inspired by a dismissive older person so the term was coined.

20 Year Old TERF: Trans people don't belong in the community! They aren't real! Just for attention!
80 Year Old Trans Man: Ok boomer
.
.
.
40 Year Old Man: Boys are wearing makeup and it is wrong! They should be raised to be a real man!
15 Year Old Nonbinary Person who Knows Makeup is For Everyone: Ok boomer

Ok Boomer by Wake-me-up-i-must-be-dreaming December 16, 2019

Ok boomer 

Saying “ok boomer” is a lazy attempt at invalidating the opinions of those who you don’t agree with, without using any actual arguments. It was originally used specifically against boomers, but now it’s used against pretty much anyone even if the person is ironically younger than the person who typed “ok boomer”.

Sam (20) on Facebook:

I don’t think paying CO2 taxes will save the planet. I don’t see how giving the government even more money is a solution.

triggered environmentalist who can’t come up with any proper arguments (30):

ok boomer

Ok boomer by Honest 7 January 16, 2020

Ok boomer 

A phrase used by sexually confused teenagers to get a feeling of achived dominance over middle aged people.

Karen: ”Teenagers are so lazy these days! All they do is stare at their phones all day!”
Some random teenager: ”Ok boomer”

Ok boomer by shadyslayer69 November 5, 2019

Ok boomer 

A way to terribly insult elders or fellow people. You use boomer when you can’t think of anything better to say.
Ok zoomer is also a terrible insult.

“Ok boomer”, said Fergus
“No u”, said Phoebe
“Ok Zoomer”, said Fergus

!Don’t be like Fergus!

Ok boomer by Webby97 December 10, 2019