A person from the baby boomer generation or really anyone who is older than the person using the word, usually used if said person is being annoying or talking bad about a younger generation. Sometimes used in a joking way among friends.
by Bdubshejc November 11, 2019
Get the Boomermug. 
Grandma: Hey honey before you leave peg your pants your dad used to do that and he brought back all the ladies
You: OK BOOMER!
You: OK BOOMER!
by Hardcore Bootyflakes November 10, 2019
Get the OK Boomermug. 
When a boomer (especially a man) has grown attached the brainrot around politics and chatGPT, so attached that they don’t have the capacity to engage in anything without bringing one of these things up
Non-boomer: hey dad, it’s good to see you it’s been a while!
Boomer: it’s all thanks to trumps America
Non-boomer: dad, you have boomer brainrot
Boomer: it’s all thanks to trumps America
Non-boomer: dad, you have boomer brainrot
by Chud wozniac July 17, 2025
Get the Boomer brainrotmug.