An extreme fan who loves a movie, tv show, a character, a game, etc. This person doesn’t care if what they like sucks. They are usually so toxic towards people who have different opinions of something they like.
by The Open Window Maniac January 18, 2018
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An fucking annoying turd that loves something so much he hates everything else. An example of a fanboy would be attacking the comments in a versus video e.g. minecraft
Fanboy: AHAHAHAHA OMG MINECRAFT A SO AWSEM I DIED DI GIT IT HAHAHAHAH I LUVE IT IZ HAZ AWSMZ STAFF!!!
Me: shut the fuck up dumbfuck
Fanboy: AHHAAHAHA NO MINECRAFT IS WAY MORE AWSM THAN RUNESCAPEHAHAH HAHAHAHAHAHAHAH
Me: I don't even play runescape
Fanboy:......
by Psychotic looser February 1, 2015
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Plural 'fanboys.'

A male variety of fangirl. These are males of any age though usually teens that are obsessed with anime and will often turn rabid over getting the latest copy of their preferred manga. Unlike a fangirl, fanboys tend to be a little calmer but will still start an online or real life war with you if you say anything bad about the anime/manga they like.

A fanboy will either streotypically be into mostly female characters with big boobs or strong personal or mostly epic male characters which they cosplay.

Some fanboys are however tame and enjoy detailed conversations about the thing they are a fanboy of and are open to suggestions of other things they might enjoy (unlike those who are so stubborn they think anything they haven't heard of must be rubbish)

They can be see with badges/stickers/keychains of characters, reading or drawing manga or playing computer games on hand-held devices.

Fanboys can be a fan of yaoi or yuri but will be unlikely to admit being into yaoi.

Not to be confused with an otaku or a weeaboo as fanboys don't have to be obsessed with something Japanese but dominantly are to a respectful if scary level.
Boy A: I really like Bleach.
Boy B: I know, you're a total fanboy.
by EndlessHetalia January 15, 2012
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informal derogatory: A term used to describe people who bought a product that competes with the one you bought, which is probably more popular than your choice, for reasons that you wish to discredit or diminish because you’re secretly afraid or upset that you made the wrong choice.

ORIGIN from fan + boy.
You bought a brand new Macbook Pro? Whatever, your a fanboy, I'll stick to my Acer.
by AceHendo April 11, 2011
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Someone who makes something sound bad to make something else sound good.
Xbox graphics suck, Gamcube graphics are way better
by hammer November 18, 2003
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A person which, despite given multiple facts to the opposite of which they believe, will always argue that a certain console is better than another. They seem to be incapable of understanding that this is up to opinion.
Jake is such fanboy, all he ever talks about is the XBox One, and when I tried to give him evidence why PS4 is better, he just denied it.
by Jiffem May 24, 2015
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