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
Get the Fanboy mug.
1. A person who is completely loyal to a game or company reguardless of if they suck or not.
2. A pathetic insult often used by fanboys themselves to try and put down people who don't like whatever it is they like.
3. See fool or SEGA.
"If you don't worship SEGA and send them all your money and pay $500 for the copy of Panzer Dragon I'm selling on ebay then your obviously a Sony fanboy even though I've never heard you mention a single thing about Sony the entire five minutes I've known you." Said the SEGA Fanboy.

"Yeah but the SNES didn't have Blast Processing" Said the Sega fanboy.

"FF7 sucks" Said the SEGA Saturn fanboy.
by Sega Slayer June 27, 2003
Get the fanboy mug.
A moronic word used much in the equally moronic world of video game culture. It is usually slung at fans of a popular game by losers who are jealous that their game isn't popular. It is related to dumb terminology such as "noob", used by people who embrace unfunny "humor" that eminates the sub-culture of video game players.
As soon as I was called a fanboy, I knew I was dealing with a putz who listens to idiotic Playstation songs by the losers who can't write real music.
by Gaming culture sucks! May 9, 2013
Get the fanboy mug.
Geek Term related to forum users who think a product/company/person can do no wrong.
No matter many bugs Star Wars Galaxies has, a fanboi will alway defend the developers.
by Mutant May 24, 2004
Get the fanboi mug.
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
Get the Fanboy mug.
Deliberate mispelling of the word 'fanboy' typically referring to an annoying, immature fan of a specific video game console.

fanbois typically spend most of their free time telling anyone who will listen how perfect thier console of choice is, and how inferior all other products are. fanbois will not stop annoying other people until everyone they know is converted to their way of thinking.
neutral observer: "Console X looks to have a strong line up this year, but console Y still has the momentum from last year"
fanboi: "NO STFU CONSOLE Z IS THE BEST EVER. UR ALL IDIOTS, GO WASTE MORE MONEY ON YOUR SHIT CONSOLE X AND Y LOL"

fanboi 1: well well, if it isnt mr stupid console Y owner fanboi 2: your just jealous of how awesome console Y is
*fight to the death*

- rrunner
by Browny11111 January 9, 2008
Get the Fanboi mug.
A person who loves something without question.
Martigen is such a fanboy.
by bah January 28, 2003
Get the fanboy mug.