In Tagalog (australian-filipino language), it means "cow"
T: go walk across the field to milk the baka. I don't care if there's a thunderstorm!
Origin - The word baka is made up of two kanji - Ba (horse) and Ka (deer). The idea being that if you can't tell a horse from a deer, then you must be BAKA.
Me: Oh, shut the HELL UP!! >_<
It is also the most overused word by otakus, otakets, and wapanese.
And apparently it also means cow in variouse languages.
- A...soko ni baka ga iru...
- Osoi zo kono baka
2. Can be used as an expression of frustration by pointing at oneself without actually referring to yourself
2. I lost again.. baka...