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.