A put-down used to tell an ignorant or closed-minded person of the baby-boomer generation that you do not respect their opinion because it's built on misinformation or ignorance so great that it's unreasonable to try and undo it all in the current conversation. Typically, one who uses this phrase does so because they realise that the person they're talking to would not be willing or able to enter a reasonable discussion about their misinformed opinion.
Boomer: "You millennials are so lazy, you think you're entitled to an easy life. You don't know how the world really works. By the time I was your age I'd paid off my mortgage because I worked hard."
Millennial: "OK boomer"
Millennial: "OK boomer"
by Pablo Guardo February 26, 2020

When your parents never understand technology and tells you to stop using your devices. Often used by Millennials and Gen Z.
Boomer "YOU'LL NEVER BE SUCCESSFUL WHEN YOU ARE USING YOUR DEVICES AND NOT STUDY!!"
Gen Z "OK boomer"
Gen Z "OK boomer"
by HyperMan53 August 1, 2021

by midgebtw December 2, 2020

by memelord_69,420 March 5, 2020

by CoolTrainer November 12, 2019

The most powerful word in the galaxy. with the he ability to destroy boomers. Boomer will fade away similar to a thanos snap
by Boxbeater1 November 24, 2019

by godmf February 24, 2020
