An ideology which promotes the discrediting of ideas from any person or entity that disagrees with one's preconceived beliefs, regardless of their source's credibility. It is a common ideology among the "Baby Boomer" generation, born between 1946 and 1964, hence the title "Boomerism".
So many young people's ideas are shot down today without a second thought despite the fact that it will ultimately be their job to fix the issues created by the same group that is largely still in power; what a blatant display of Boomerism!
by margaritamix_ June 6, 2020
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In Texas Hold'em, a player in first position who overplays his/her hand going all-in.

Everyone folds and the boomer takes the blinds only.
You went all-in with a premium hand and only won the blinds?

Nice play there Boomer!
by aloha27 October 31, 2009
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Ay, you heard that Heytvelt got popped for boomers?
by tippleman March 22, 2007
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boomer: Hey how does this computer work?! HELP ME! God your generation is so LAZY!
Zoomer: OKAY BOOMER!
by 🤏Urban Dictionary🤏 November 21, 2019
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US Navy slang for a ballistic-missile submarine.

http://en.wikipedia.org/wiki/Ballistic_missile_submarine
The US Navy boomers are the Ohio-class.
by Axeman73 April 10, 2009
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While observing a fat person puking it is customary to yell BOOMER to warn others so as not to attract the horde! Also works well as an insult.
Guy #1: "Holy shit you see that fat girl in the backyard puking?!"

Guy #2: "BOOMER! Watch Out!"
by Jonan2012 October 26, 2010
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A nickname for Mushrooms.
Mushrooms that a can be consumed in order to alter the mind state in such a way that you may begin to hallucinate and see colors as well as many other objects that may or may not be actually there in reality.
Hey man just bought a half ounce of boomers, you wanna trip?
by Kevin420 December 20, 2007
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