One who loves to view the grace, beauty and dedication of the physical accomplishments of Eastern or Western combat arts, without being bothered to actually do any of it, yet still knowing a great deal on the subject.
Could possibly be called a Partial Artist or Chair Boxer.
Someone who enjoys others who fight while they sit, one who has mastered Bum Fu.
A lazy Fight Fan.
Bloke 1: Your mate knows alot about martial arts, girl...
Lady 1:Oh, dude, he's an Armchair Martial Artist who has mastered Bum Fu.
by Snowcaller December 4, 2013
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A professional armchair pilot is a person who is obsessed with aviation and aircraft, but has no actual pilot training or experience. They may spend hours studying flight manuals, watching aviation videos, and discussing the finer points of aircraft performance, yet they have never even set foot in the cockpit of an actual plane. Despite their lack of practical knowledge, these individuals may still consider themselves experts on all things aviation and may even offer their unsolicited opinions on piloting techniques and aircraft design.
"I asked John for his advice on flying my small aircraft, but it turns out he's just a professional armchair pilot who's never even been in a cockpit. I think I'll go with the advice of the actual pilot I know."
by ILoveRyan69420 January 6, 2023
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A person on social media who’s only engineering experience is in stock Kerbal Space Program telling people that a team of hundreds who have years of experience don’t know what they’re doing

A person who doesn’t know what the fuck they’re talking about
CS_Skeptic said that Starship can’t fly because the flaps will tear off. What an armchair rocket scientist!
by TheRealSheep5 January 31, 2023
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When you take it upon yourself to tell people how to park or shun someone’s parking or take it upon yourself to call out someone parking in a handicapped spot not knowing their condition
Dan used his wife’s handicap placard to go into the store. an armchair meter maid cussed him out for parking there.
by Dnurse15 April 20, 2023
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The type of wannabe-nazi who sits all day long in their armchair in front of their computer, scroll through /pol/, save bazillions of bad memes and use discord. Usually these people lost touch with reality due to them hiding in the basement.
A strong correlation to the incel exists.
A: Did hear anything from Jeff recently?
B: Nah, he is sitting in his basement all day long and insults "race traitors" on the internet. A total armchair nazi.
by keepYourSecrets October 14, 2019
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Anyone on the internet who overly criticizes you or bitches about a spelling/typing mistake
"Learn how to spell before you talk"

"You're an armchair english teacher shut the fuck up"
by ( ͜。 ͡ʖ ͜。) May 28, 2021
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Fandom name of the toxic part of a.r.m.y which are BTS fans. They like to drag down other groups down, appropriating other fandoms joke, and they have a big superiority complex. They made a.r.m.y dirty and now theyre the most toxic fandom of kpop. F*ck armchairs !
A: They stolen our inside joke again
B: Who ?
A: Armchairs

B: Wtf again ???
by kpopencyclopedia December 2, 2020
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