Lets begin by explaining what the word 'weeaboo' means. *takes deep breath*

ALL YOU FUCKERS OUT THERE WHO CALL SOMEONE A WEEABOO YET DOESNT KNOW WHAT IT MEANS LISTEN THE FUCK UP.

dictionary meaning:
A weeaboo is someone who worships pretty much anything that is Japanese or related to Japanese culture. The implication is very negative and often is an accusation of wanting to 'be Japanese' (or whatever their warped perception and idealisation of Japaneseness may be)

For people who don't understand:
If you weeaboo, you think that you are japanese and think it's kami-sama (god) because you watch anime and you say that your 'original' nationality is bad.
(Imagine Hitler, but he was actually English and believed he was German)

here is a link to a fine example of a weeaboo (or 'weeb' in short)
(This girl is PRETENDING to be one, she is MOCKING weeaboos, don't bitch at her!) :

https://youtu.be/7R9jGzZqq70

IF YOU ARE IN ANY WAY FEELING SYMPTOMS OF A WEEABOO AND DON'T KNOW HOW TO BECOME AN OTAKU AGAIN PLEASE SEEK HELP, OR STOP WATCHING ANIME FOR A MONTH.
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BEING CALLED A WEEABOO IS A VERY BAD INSULT TO SOMEONE SO IF YOU GET CALLED A WEEABOO AND HAVE SHOWN NO SYMPTOMS OF WEEABOO-NESS THEN I GIVE YOU PERMISSION TO SMACK THAT PERSON IN THE FACE WITH A FLAMING CHAIR.