The Karate Kid Part II (1986)

Continuity mistake: When Chozen hits Daniel in the stomach, on the bridge by the village, one of Chozen's friends kicks the drum under Daniel to the other side of him, but when the girl hurls the vegetable at Chozen, it is back where it originally was. Also, when the girl hurls the vegetable he looks over his shoulder to his left, yet in the closeup he is looking over his right shoulder. (00:55:25)

The-Immortal

Chozen: Your teacher need a hearing aid. Maybe you need one too.
Daniel: I only hear what's worth listening to.

Trivia: When Daniel and Miyagi are picked up at the airport by Chosen, the radio is switched a few times before landing on a specific station. The song the radio is playing is the same song played at the country club in Karate Kid I where Johnny kisses Ali.

Question: When Chozen, while bullying Daniel, takes the latter's handheld drum (which Chozen mockingly called a "baby rattle") and calls the latter a baby, Kumiko, sticking up for Daniel, fiercely says a phrase in Japanese (or Ryukyuan) to Chozen. What exactly does Kumiko say, and what does it mean? (00:57:50)