The theory that states that
one judges a
guy/girl's hottness by comparing him/her to those around them. This explains why
one would think someone is hotter when seen at, say a movie theater, than at school. There are fewer to compare them to.
Guy 1: Dude, that girl that goes to your school is really
hot.
Guy 2: Naw, that's the
theory of relative hottness. At school she's not that
hot.