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 shit about a younger generation. Sometimes used in a joking way among friends.
"LMAO, ok boomer"
"Karen is being such a boomer"
"LMAO, ok boomer"
"Karen is being such a boomer"
by olemann69 December 16, 2019

by Gen z’er January 1, 2020

by Not a boomer November 18, 2019

Typically used on a baby boomer or someone older than the person saying this phrase, it's used to let the baby boomer/ person older than you know you're talking shit or you're being annoying
by InfernoFF YT November 23, 2019

A Boomer is usually an older person who thinks all video games cause violence and that the younger generation relies on their phones too much.
Me: My grandma wont let me play Mario at her house because she thinks it's too violent
Friend: Too bad... She sounds like such a boomer
Friend: Too bad... She sounds like such a boomer
by LuckyDuck3727 November 26, 2019

by Tylenol December 4, 2019
