weeaboo (noun) wee.ah.boo
a negative term directed to anyone overly obsessed with Japanese culture to the point where they become annoying. used frequently on the boards of 4chan.
most weeaboos are uneducated about their obsession of choice are are often “noobs” who are overly zealous, trying to impress others with their otaku knowledge. Another trait of a weeaboo is their desire to “be Japanese”.