Daniel LaRusso: I don't have a costume, anyway.
Mr. Miyagi: If have costume, you go?
Daniel LaRusso: Yeah, maybe if I went as the invisible man.
Mr. Miyagi: "Invisible man"?
Daniel LaRusso: Yeah, you know, so no one would see me.
Mr. Miyagi: Oh...
(At the dance, Daniel comes in hidden in shower courtain, he's "invisible"...)
Ali Mills: Hey, there's Daniel.
Ali's friend #1: Where?
Ali Mills: The shower.
Ali's friend #2: How do you know?
Ali Mills: I just know.