You’re a Horse-Deer. No you’re Mr. Senile. Huh? What do these insults mean? — If you’ve spent any time in Japan, or just enjoy manga/anime, you’ve come across the word, baka, meaning stupid or foolish. Baka is, by far, the most common insult in Japanese. Like many common Japanese words, baka is eminently flexible. It can be used alone as a noun or adjective…