The rule that states that if you don't like
what you see from a person in the first ten seconds you see them, than you will most
likely not like
them later on.
Is ussually used on apparent
douchebags, seemingly annoying bitches, or preppy-ass
Jim: Ay, Carl! Look at that guy over
(Carl looks at apparent douchebage
and applies 10-Second Rule)
Carl: He looks like a fucking douche.