1. Any self-proclaiming anime fan who alienates themselve from their own society and assimilate into the Japanese culture from which they know little-to-none about; using their so-called anime knowledge as a guide, which destined them to ultimate failure in assimilation. 2. A special breed of anime fans who put Japan on a pedastol and prefer them over any other countries in terms of multimedia, courtship, etc... (E.g. prefer Japanese/Asian sprouses, prefer J-music > Amer. music, wanna live and die Japan, etc...) As far as anime goes, they know only little. For example, the average weeaboo knows only americanized anime; preferly uncut with jap. audio and eng. subs ( E.g. Naruto, DBZ, Bleach, Haruhi Suziyama, Lucky Star, etc...) and memorized every japanese song from their favorite shows.

Note: Anybody who watches some anime and reads manga are not weeaboos. Those who go over-broaded with their anime, hentai, and pocky obsession are.
A classic example of a weeaboo's presence on the net, this unknown 16-year-old girl's rant about Miyavi:

Gaaaaaaaaaaaaahhh!!
OMG! I loooove Miyavi!!!
FYI - all you haters - I saved ALL these pictures!!!
Miyavi-desu...aishiteru!!!!

...so hot, so fine, so sexy, so cute, so funny...*dies*

note that Weeaboo love over-using common japanese word/phrases, like kawaii, desu, and aishiteru accompanied by a exclamation mark.
by skylar85100 June 27, 2009
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Someone, usually of Caucasian descent, who attempts to act as if they're Japanese. They are usually overweight teenage males. They will usually try to insult you using words they heard in an Anime, but usually end up pronouncing them wrong and making a complete fool of themselves. They almost always own bodypillows and go to anime conventions dressed in "Japanese" attire. On rare occasions, girls can be weeaboos.
Person 1: Konnichiwa Senpai!
Person 2: Fucking weeaboos.
Person 1: What the desu did you just say to me, you baka?
by laserman413 September 25, 2016
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Originally a fictional game from a webcomic name the Perry Bible Fellowship, where one person would say weeaboo and get slapped on the ass with a paddle. This was later adopted as a meme on 4chan when moot got offended by prevailing anti-Wapanese sentiment on /b/. This just gave the /b/tards a new word to insult the wapanese. It is now a derogatory phrase used to insult animu fans who act like faggots on the internets.
A weeaboo can be found on Gaia Online, your schools anime club, or 4chan.org.
by Ninja337 January 3, 2007
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1. A person so obsessed with japanese culture that they ignore their own.
2. Someone obsessed beyond healthy levels with anime.
3. People who ruin activities for other people with overzealous references to said anime.
4. People so oblivious to reality they only care about anime.
5. An action worthy of getting one's ass beaten.
1. Inuyasha fans
2. Americans claming to be "Otaku."

3. "Did you hear that kid? He won't shut up about how great Full Metal Alchemist is. Such a weeaboo."
by JonathanNeal August 7, 2007
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Someone obsessed with anime to a point where it begins to be insulting.

Someone who speaks in japanese/replaces their name with something "japanese", usually just some word they make up that sounds Asian to them.

See wapanese
Omfg, he's such a weeaboo. He won't get his hand away from dick long enough to realize that his anime isn't real and he's not actually Japanese.
by Undeadfaggot November 27, 2016
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35 year old men who are still virgins living in their mothers' basements. They regularly watch hentei and jack off to Pokémon because they have no fucking life.
When I found out my cousin was a Weeaboo, I went on a treasure hunt to find my favorite rifle.
by TrumpisDad December 3, 2016
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