Boomer 

A goal scored in football/soccer with a lot of power usually from out side of the box

Guy 1: "Did you see Luka's goal?"

Guy: "Yeah, was a proper boomer!"

Boomer by LosReyes March 21, 2013

Boomer 

Star Trek slang for someone who has spent their entire life aboard deep-space freighters.

http://memory-alpha.org/en/wiki/Boomer

Travis Mayweather was a boomer who was selected to become the helmsman of USS Enterprise NX-01.

Boomer by Axemantitan April 3, 2009

boomer 

1) Term used to describe the RPG Launcher in the xBox 360 game Gears of War. Also called Boom Shot. 2) Any Gears of War character who uses the Boom Shot (RPG Launcher)

1) Every time I blow their asses with the Boomer, they quit the XboX live multiplayer game.
2) Boomers ain't got nothing on me because I am too quick with the shotty.

boomer by Jayson from Boston February 25, 2007

boomer 

Those who think they can drink a lot, end up drinking too much and puke their guts out resembling a boomer from the Left 4 Dead video games series where a boomer pukes on players.

Holy shit! I can't believe Brandon drank that much! He looked like a total boomer when he was puking his guts out!

boomer by King Schrong November 22, 2011

Boomer 

Some annoying ass old person who thinks they’re the only person alive/thinks they should have it their way because they’re old.

Old person: “It’s not nice to stare at your elders.”
Then stares at a young adult because they have piercings or/and colored hair
Young adult/Teen: “Okay boomer.”

Boomer by yasipooh October 16, 2019

Boomer 

A Retard

Quit being a boomer

Boomer by LifeTimeChicken June 17, 2019

Boomer 

A type of bloated zombie from the Left 4 Dead franchises that pukes on survivors, alerting a horde of common infected

"Watch out I hear a Boomer"

Boomer by NothingDefines May 22, 2019