One of my high schools allowed their students to come to school in (approved) costumes if they made a small donation (to charity? Scholarship fund? I'm not sure). One girl I was teaching showed up in a black shirt, flowing black skirt and a fancy white scarf, giving off sort of an "island" vibe; I wasn't sure if it was a costume or not.
ME: So what are you dressed as today?
KID: Basic White Girl.