Why is it that all the great stuff happens when Im unprepared?

Why is it that all the great stuff happens when Im unprepared?
me: wearing my dads old t-shirt thats twice my size, some sweat pants, and brightly colored mitch matched socks, hair in a tangled wad on the top of my head
parents: hey! Lets go meet my friends super hot son who is your age!

me: has on the nicest dress that I own, super cute shoes, hair is perfect
parents: you cant go anywhere today! We have to clean, then reclean our whole house!