This is basically a Japanese internet slang used commonly to define people who are obsessed with the Japanese culture.

Some people see them as annoying, since they always like to imitate the Japanese culture, even if they're not Japanese.
Person #1: Arigato for the food! Kenpai!
Person #2: Since when you've become such a weaboo?
by Paradoxmi_st November 28, 2016
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Someones who's life only resolves on anime, manga and video games. They wear products that resolves to an anime or video game and only talk about it. It gets annoying.
"Daww!! What a kawaii sunset!"
"Did you watch the last episode of Bleach?"
"Yeah! It was so sugoii!! Toshiro is so sugoii!!"
"He's not that great..."
"Oh you're a baka!! Kyaaa! Toshiro!! you're so kawaii!!"
*In my mind "weaboo...."
by Astrain May 18, 2012
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Someone who's world revolves around anime and manga and that's all they freakin' talk about 24/7 because they don't know anything about anything else in the world. They are like otaku's but worse and and major geeks and nerds. AKA Melissa Leonard. They also bash the japanese culture and language by trying to talk japanese and saying KONICHIWA!!! OMG THAT'S KAWAII DESU!!! NYA!
I freakin' hate weaboo's because they are retarded.
by jlotusblossom7 January 21, 2010
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An insult used towards people who watch anime, use a few Japanese words in normal sentences (Most of the time learned from anime.), thinks that everyone's opinion is irrelevant compared to their own, and want to move to Japan based on what they've seen from anime. Not to be confused with an otaku, a weaboo is completely different. Sometimes weeb is also said, which is a synonym to weaboo.
Hey, Senpai! Wasn't Biology sugoi today desu?


Oh, you baka!

You're kinda sounding like a weaboo right now...
by Diet Swag June 02, 2016
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someone who likes anime a lot but denies it even though he asks other to play anime games with him
Aaron: "Logan's a weaboo"
Logan: "what no"
by Totallynotaaron January 04, 2018
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