Armchair Expert 

Someone who claims to know all the answers to a problem, situation or scenario but has little or no experience or real understanding of it. Usually found on internet forums or writing in the letters section of tabloid newspapers. When faced with educated people who disassemble their argument with facts, they often state they learned their experience at the "University of life".

"If you exceed the speed limit by just 1 mph, you should be banned from driving"

"But you've never driven in your life, you're just an armchair expert"

Armchair Expert by The Welsh Wizard January 11, 2012

Armchair Columbo

A person who thinks they can work out the motives, actions and guilt of people involved in high profile media criminal cases, based only on media revelations and their limited imagination.

Derivation is from Lt Columbo (a fictional TV Homicide detective from the 70's and 80's) who always knew who the killer was, within 2 minutes of meeting them (although, because this was fiction, he was always right)

Armchair Columbo's exist in a simple world full of Black and white motives, stranger dangers and Paedophiles hiding behind every tree

They are more likely to be conversant with TV police dramas than real life, and will know a great deal about forensic science from such shows as CSI:NY and NCIS, without realizing that most of this is fiction

Tigerlily: On the news, it said the missing boy was fully dressed and walked out the front door. How could a 3 year old dress himself and open the front door? I reckon the parents must know a lot more than they are letting on
Vinnie: Oh Tigerlily, you're such an Armchair Columbo

Armchair Columbo by DutchCappedCrusader January 16, 2014

armchair psychopath 

A person who fantasizes about damaging others and satisfying only himself from the comfort of his own living room.

He may be an armchair psychopath because all he ever watches are those gritty, violence-laden crime shows on television.

armchair psychopath by Dr Bunnygirl December 13, 2018

Armchair General 

That one dipshit on reddit that always comments on military related threads acting like they know what they are talking about because they watched Top Gun, played Call Of Duty 4 and War Thunder. Usually bashing the F-35.

I've played war thunder and once read an article on Aviation.com about the F-35, and trust me and my advanced experience, the F-35 is the worse plane ever made and can be shot down by a biplane.

Shut the fuck up, you're an Armchair General, you stupid neckbeard.

Armchair General by slippery slope January 18, 2015

armchair commando 

Somebody who collects weapons, usually knives, guns, and swords, and talks a lot about warfare, violence and the the like. Has never actually fought in a war, or been in the military, but loves the two subjects. Fantasizes about being a navy SEAL or a federal agent. Usually a giant pussy when the shit actually hits the fan.

Greg: "Aw man, I wanna be a Navy SEAL soooo bad. Because they have the biggest variety of weapons to choose from. I just bought a shotgun with a pistol grip, so I'm already in training."

Kyle: "I'm gonna punch you in the face you armchair commando."

Greg: "Please don't! What did I do! No, stop! I'm sorry!"

armchair commando by Lupara2012 July 29, 2012

armchair pilots 

Someone who gives expert advice and believes his opinion is always the best, despite never have flown or been in an aircraft before, except for his own aircraft on Microsoft Flight Simulator

1. "Hey did you see Dermy?"
2. "Yes I did! He thinks and believes he has the knowledge of a real pilot"
1. "Of course he does! He's an armchair pilot!"
2. "I hate armchair pilots!"

armchair pilots by toivo1 May 15, 2014

Armchair Policeman 

Noun.

What a person becomes when, upon receiving word of a police incident from the internet, the news, or word of mouth, one gives advice on how the police should have "properly" handled the situation in line with police protocol, the law, etc.

Usually, this occurs when the police have been accused of wrongdoing or, even more commonly, when the police have been accused of no wrongdoing yet the receiving party believes they are almost entirely at fault.

Common occurrences include drug busts, traffic stops, and police shootings.

Theodore: I can't believe the police shot him, he only had a knife on him. Since when do you need to shoot someone with a knife? They should have used their taser or pepper spray, it's not even legal to use deadly force in a situation like that.

Bill: Man, Ted, you are being quite the armchair policeman right now.

Theodore: It's Theodore.

Bill: Whatever, dude.

Armchair Policeman by unfromcool April 16, 2014