a non-japanese person obsessed with japanese comics/cartoons called anime/manga
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)
-baka(stupid)

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.

A person, who's of non-Japanese descent, who wishes that he or she was Japanese and claims to be an expert on all things Japanese. Usually, the person gets most of his knowledge from watching anime and reading manga and adamantly believes that everything that's made in Japan is better than anything else that's created in the rest of the world. They try to speak Japanese (which are usually slang words from Japanese anime) but fail at it so badly. They also believe that Japan is exactly as depicted in anime and thinks that Japan is some sort of fairy tale land. Pretty much, they are posers who wish that they were Japanese, worships the Japanese as if they were gods, and thinks that Japan is the center of, well, everything and they are extremely annoying, are very retarded and have a massive case of inferiority complex. They also claim that they are being oppressed by "outsiders" but the ironic thing is that they are doing the oppressing.

The ultimate anime fan. (Not to be confused with Otaku or Fangirl/Fanboy)

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.

A person so obsessed with Japanese culture to the point that they denounce their own and do everything they can to be Japanese. Keep in mind, people can watch anime, have a genuine interest in the Japanese language and appreciate the culture without being full on unhygienic weaboos.

Most obsessions arise through the first or second anime through weak willed humans. Symptoms include loss of rational thought, slurred speech, permanent virginity, poverty after the stack of body pillows/katanas the patient buys, odor.

Our society is generally well protected by the Weaboo Protection Task Force, a military unit tasked with the number one priority of weaboo elimination.

The reason that Amber alerts were invented.

Mostly fat white chicks who go to anime convesions and are obssesed with inuyasha and dye there hair black in poor attempts to be japanese, they often say a few words like konichiwa, baka sayonara and feel as if the know the languge, they also sing anoying theme songs from notable anime shows and show up to school wearing fake cat ears saying there married to inuyasha.

1:When you have a big love for anime and decide to Dye your hair Aquamarine

2:When you do a cosplay on an Anime character {Itachi Uchiha}