And now its the other way round and now its the weebs that are the ones that have to tell others (tourists) that anime girls aren't real? im so sick of people treating fictional characters like they are real and real people like they are fiction.
At one time, I would’ve taken their opinions seriously, now I assume they are barely better than animals in terms of intelligence
Not sure on the initial first usage, but /a/ on 4chan, back when it wasn't shit (it was always shit though, but different shit), made a word filter that switched "otaku" with "weeaboo". That was what popularized the term, though likely didn't originate it.