Basically, a weeaboo is a specific variety of nerd who is overly devoted to Japanese pop culture. Their life is pretty much sustained on a diet of anime, manga, and video games, which can be a bit off-putting to others, to say the least. They can be seen using Japanese words incorrectly, dressing up like anime characters, and worshipping Japan without knowing anything about it outside what they’ve seen in anime.
IN SHORT, THEY'RE ANNOYING.
I have a dream that weebs and non-weebs can someday live together in harmony. In the words of a wise cat known as Meowth, “Maybe if we started looking at what’s the same instead of always looking at what’s different…well who knows?”