An extreme fan or follower of a particular medium or concept, whether it be sports, television, film directors, video games (the most common usage), etc.

Known for a complete lack of objectivity in relation to their preferred focus. Usually argue with circular logic that they refuse to acknowledge. Arguments or debates with such are usually futile. Every flaw is spun into semi-virtues and everything else, blown to comedic, complimentary proportions.

Known for using the phrase
"Object of affection = Best Ever"
However, while people only really say that as hyperbole, fanboys truly believe it.

Troll the internet to spread the gospel.

Insult/chastise others for using public forums to express an objective opinion, no matter how constructive or, respectful it may be. (Go ahead and admit that it's a good game/movie/etc. This fact and anything else will be promptly ignored in favor of cherry picking the negative, and beating you over the head with it.

Tend to resort to petty annoyance replies when backed against the wall. Usually grammar attacks and non-replies.
"Final Fantasy VII is the best RPG ever!"
"Ocarina of Time is the best game ever!"
"Linux is the best OS ever!"
"Xbox is the best console ever!"
"Dragonball Z is the best show ever!"

The sad thing is, fanboys don't realize, that these companies that fuel their passion, don't really give a damn about us. To me, defending a multi-national corporation like their your own family, is ridiculous. These organizations don't come to your house and help you when you're sick, they don't help you move, or drive you to the airport. They don't support you in any way. It's a business, not a friendship. As soon as you can no longer buy their product, you disappear to them.
by Lig Na Baste July 11, 2008
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A fanboy is any person who is the unthinking pawn of a major label/brand. A fanboy is just about the most annoying creature on earth, particularly in the heated debate of Mac vs. PC or in the realm of politics. They tend to be really irrational, and unwilling to look at both sides of the debate: repeating things by rote and being completely partisan. Also, the typical fanboy is totally uninformed and biased to a precedent, hence the repetition of rote sayings or facts/myths.
Mac fanboy says "Apple can do anything! Even make an edible iphone, if only to prove they can do anything!!!!"

PC fanboys says "PC for the win!"/"Mac's may crash less but their crashes are worse!"

both tend to be dumbasses
by thorhizzle May 4, 2009
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Someone far beyond a simple fan.
No, not the tye of fan which keeps people cool.

An arrogant person who goes into an outburst every time something he likes is questioned. Fanboys usually acuse others of being fanboys. Usually use 1337 and swarm MMORPGs. Fanboys caused alot of fallouts between people when they started arguing about consoles. If you insult something that a fanboy likes, he will spam your computer up and try to insult something that you like. Most words a fanboy uses are in 1337 or end with 'X0RZ' and they spell the work 'the' as 'teh' because they think that it is 'teh ro><0|2Z!!!'
e.g. Counterstrike is teh rockxorz!

Fanboys usually use the word 'own3d' if they beat someone.
Another annoying feature of a fanboy is that if he is loyal to a console, he usually goes to rival console forums and spams the place up with inults about how his console is 'better'.
They take the 'console war' very seriously, as if it's a real war.

(Although I'm a Nintendo fan, I hate Nintendo fanboys who can't shut up because a Sony fan said that Nintendo is for kids. Dude, chill out, the console war isn't a real war!)
Sony Fanboy: omg n00b nintendo is teh suckx0rz becasue its games are for kids because they dont have 100% violence! etc. etc.

Nintendo Fanboy: STFU N00B NINTENDO |2O><0RS SONY, TAKE AWAY GTA AND YOU CAN'T SAY ANYTHING! NINTENDO ISN'T FOR KIDS BECAUSE NINTENDO HAVE BEEN GOING FOR 100 YEARS+ etc. etc.

XBOX Fanboy: STFU BOTH U N00BS! XBOX is owned by microsoft the richest company in the world, you both suck!

Neutral Fanboy: OMG I DIED ON COUNTERSTRIKE WHILE I WAS MACROING! I MUST HAVE BEEN HACKED! I'M REPORTING TO GAMEMASTER!

All fanboys: OMFG U WERE MACROING N00B IM TELLING GAMEMASTER!
by Arran January 3, 2005
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One who is loyal to something, usually a company or manufacturer of some sort, no matter what.
Look at those fucking Corsair fanboys. Pathetic.
by ☢_☢ August 14, 2009
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The rare form of the fangirl interested in celebrities and fictional characters as well as "geek cultures" (Doctor Who, Star Trek, etc.) If you find a fanboy you should contact the nearest fangirl immediately, as they are an endangered species.
"Hey check out my David Tennant trench coat, I got it for coaplaying this weekend!"
"Dude, I didn't know you were a fanboy!"
by Aim Hemmings July 2, 2015
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1. (Noun) A rare species akin to fangirls but of the opposite gender.

2. (Verb) What a person of the male gender does when they get feels. E.g. flailing, squealing.
1. Liam is a huge fanboy.

2. He fanboyed so hard he could barely breath.
by Ndjcnskskvk May 9, 2016
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Biased people who think that the things they worship about are the masters of the universe. However, since they are biased, they will constantly bash opposing things instead of thinking about it and stating its positive and negative attributes.
Others say XBOX is the best for its graphics and games. Well, not really. PS2 and Gamecube has some more interesting games. And what makes a game a game is that it is fun to play with, not what it looks like.
by thesunfiredblanks December 2, 2003
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