Three questions:

Why is it that if you leave cereal stuck to the side of the sink bowl in the morning, it turns into a cemented piece of sticky rock by the afternoon?

Why is it that in scary movies, the character who is about to be killed in a dark room always has a flashlight that only produces a tiny pinhole of light instead of lighting a larger area?

Why do people who are home during the day get so excited when the mail comes? (Then always look a little sad when every day it's the same - bill, junk mail, bill, supermarket flier, personalized labels attempting to con you into donating to a charity.)