Meaning idiot, fool or stupid.
Or just the thing wanna be kawaii desu girls say when they’re angry.
“Y-You did what?!! Baka!!”
“I-It’s not like I like you..BAKA!”
1: “ugh,,hes such a baka.”
2: “hes such a what?”
1: “ugh, forget it baka!”
2: “...”