Weeaboo: OMGOMGOMG!!!! This is exactly like the yukata Konakona wore in Lucky Star!!! Kawaiiiiiiiiii~!
Ordinary person who appreciates Japan: Hmm, I like this outfit. How much is it?
Sarah: Don't be such a weeaboo.
Typically, a Weeaboo will abuse the word "kawaii" to ridiculous levels, and other Japanese words will be completely mangled. Another trend is to obsess over every possible nook and cranny of a given manga, usually one translated by Monthly Shonen Jump, yet will, again, use "oro?" when told of another series, with this new series having much more redeeming values in the way of art, writing, characters, etc. Try it- ask any Narutard what Neon Genesis Evangelion is.
This is not to be confused with someone who can tell you who Akechi Mitsuhide is or one who simply appreciates and enjoys popular Japanese (the line is slightly blurred with Otaku, though they're not quite the same). In a nutshell, these are shortsighted, obsessive "noobs," key phrase Over the Top.
Compare and contrast people who do nothing but say "FAIL" all day.
They have a habit of washing irregularly, are completely obsessed with anything and everything to do with anime and foolishly believe that all Japanese culture is as it is portrayed via an anime.
Often mix (badly pronounced) Japanese into regular English sentences when speaking to produce a 'dialect' of sorts that is not only difficult to understand but also makes them sound like the cheap tourist no one wants to be when on vacation.
Often are fans of yaoi, and think/talk about it non-stop, as they do other anime that have the misfortune of attracting a Weeaboo's attention.
Weeaboo: Koneecheewa! Have you lost your In you? (Inu = dog)
Normal person: Wha....?
here are examples:
1.they commomly only care about anime/manga like for example if a different country invented anime/manga they would be worshiping that country.
2.they use the following japanese words:
(also commonly said wrong and mocking)
-desu (doesnt really have a exactranslation but used as is or mine at end of a sentence)
-kawaii (means cute)
3.in extreme cases a slight insult of anime/manga causes them to overeact and resorts to violence and cussing
unfortunatly this has developed a group of haters called antiweeaboos that sometimes overeact
like if someone reads manga and anime alot yet it isnt there world they would be classified as one
personally being japanese-american I really find weeaboos annoying and i feel offended around them sometimes
yet not all weaboos are horrible people some are just kind,missunderstood,and yes a overboard crazyfans
(this excludes 40 year olds with no life and people that hate everyone that hates anime aka mean weeaboos)
so i feel neutral on the subject.
The original definition is/was anyone who isn't from Japan whom is so obsessed with it's culture that it gets to the point where it's all they think and talk about. They usually (but not always) Cosplay, attend Anime Conventions, try to speak Japanese even though they're not Japanese, and own tons of Anime Blurays/Manga and their rooms look like they haven't gotten laid in 20 years.
Nothing wrong with this, imho but that's what the word means. If you're going to use such a disgusting and derogatory word, at least make sure you fully understand it's definition,spell it right, and GET A FUCKING LIFE! The socially acceptable non derogatory word form for this is Otaku or Anime Nerd.
How's it's used today:
Anybody who watches Anime or reads Manga or even likes anything out of the ordinary is a weeaboo or Japanophile. Even if they only watch it for entertainment and don't overly obsess about it. Or sometimes, they're called a weeaboo and don't even watch Anime or read Manga. Go Figure.
Person 2: Call me a Weeaboo one more fucking time... and it's spelled Weeaboo by the way.
Person 1: Weaboo!
Person 2,3,4,5,6,7,8: *Beats the shit out of Person 1*