When a girl (technically could be a guy too) seemingly randomly switches from being overweight to thin, to overweight and the cycle continues usually for their whole life. It is common for girls who were known at a time in life to be fat to almost spontaneously becoming hot, and usually along with becoming hot also becoming a whore. This phenomenon is common in trailer parks but as well in white suburban areas, or any area where teenage girls being hoes is common.

the art of remembering an arousing occurrence or some porn you watched while masturbating, often handy if you have no porn or your in the shower