Someone who loves anime (Japanese animation) so much that they act like their anime characters, try to speak Japanese, always talk about anime and buy anime merchandise etc. Not all of these make anyone a weeaboo, but doing one of the things that make someone a weeaboo too much can make anyone a weeaboo.
I don't consider myself as a weeaboo, but I sure do love watching anime.
By Indian anime
Someone who watches anime (Naruto, some of Hunter x Hunter), buys Rosetta Stone to learn Japanese so that he can speak like his favorite anime characters or go to Japan and be a Weeaboo there.
That kid Nick is such a Weeaboo, he learned bought Rosetta Stone just so he could talk like Sasuke Uchiha and go to Japan.
By f**k arounds
Basically, a person who is obsessed with Anime, or japanese cartoons. This person is NOT Japanese at the same time. This person also likes anime themed body pillows, as well as hentai which is anime porn. Weeb is slang for weeaboo
I saw Jeff humping an anime body pillow, what a weeaboo! Bhargav was jerking off to Naruto with titties, what a weeb!
By master jimbo
A game whereby the one who is caught saying the word weeaboo must be chained to a pipe and paddled by all around him/her. Those with the paddles must chant weeaboo until the paddling is finished and the one chained to a pipe is released.
Person 1: "If we waste anymore time on 'weeaboo,' we'll be bankrupt by the end of the month!" Person 2: "Did somebody just say 'Weeaboo?' 'cause I think I just heard someone say 'Weeaboo.'" Person 3, 4, 5, and 6: "WEE-A-BOO! WEE-A-BOO!"
By Ashimomo
A person who respects Japanese culture and is usually a huge fan of anime. They are usually really nice people, but get insulted and joked about a lot. They like to speak Japanese sometimes, which is awesome.
I am a weeaboo.
By samuchan