I thought you dropped out of school, no?
We had those silly stupid days in high school as well for a week or so. I never participated because I didn't know of them ahead of time. Also, I don't have a collection of silly hats/ties sitting around. Although wearing a bathrobe and slippers to school would be fun.
You know the current high school seniors are the first class to not be in high school since the 90's. As a result one of these new theme days is "90's day". Who knows what the hell you're supposed to dress up as.