Term for white people in cantonese-speaking areas. Literally means "ghost man". Pronounced G-why-lo
Wai: Hey guilo you not know how to dance
Tom: Whatever asshole!
Wai: But i think this ok
the one and only day that you might actually look forward to going to a math class, as many teachers allow their students to bring in a pie on this special occasion. unless of coarse your math teacher is a fucking nazi, in that case they might just spend the whole period ranting about how cool some retarded number that goes on forever is. yes thats right 3.14 is not technically pi, it goes on and on and on much like ancient old men who think shit like that is cool.
kid 1: "hey man wanna skip next period and smoke a j?"
kid 2: "Yeah... wait today is pi day! we cant skip math class today! we need to smoke now so we can take care of our munchies in there dude."
kid 1: "totally"