a adult from the baby boom age aka a (baby boomer) the age of 65. The (rapper) if you can call him that jedwill made a song called ok boomer very obnoxious loud song> with very boosted bass. most people see it as a a joke but it is very offensive.
by thestealth February 14, 2020

a boomer is someone who’s old. teenagers often used the term “boomer” to refer to themselves or their friends as jokes.
by notaboomergirl October 26, 2019

An individual who looks to defy COVID-19 regulations by claiming that wearing a mask and following social distancing measures is infringing upon their liberty.
"I don't want to wear a mask, it makes my face hot, stinks, and makes me look too ugly for my instagram story"
"Karen, just wear the damn mask for god's sake you boomer"
"Karen, just wear the damn mask for god's sake you boomer"
by AJD_24 August 2, 2020

Currently, in 2019, common worthless sheep children use it as a new insult. The source is unknown. But they follow and copy eachother like clones.
"what a boomeR"
by September 25, 2019

City of Boom - Promatic
listen to the song, it explains
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NYC guy: yoo kidd them D boys, are some hustlers.
Detroit guy: Hey dogg, imma fuckin boomer!
NYC guy: ooh sorry sir!
listen to the song, it explains
----------------------------------
NYC guy: yoo kidd them D boys, are some hustlers.
Detroit guy: Hey dogg, imma fuckin boomer!
NYC guy: ooh sorry sir!
by nathan zee April 7, 2008

An older person, sometimes used pejoratively by younger ageists seeking a scapegoat for their disappointing lives
by Arachaeopteryx February 8, 2021

boomer is a rude elder (old person" so if you see one and theyre are bosy or rude just roast the shit out of them
ok fucking boomer
by panda._.girl December 4, 2019
