When a first year college student (usually a female) eats a ton, and precedes to sit on her ass and gain 15 lbs.

Another name for the college freshman class; given to the freshman class because in the first year of college, students will usually eat more than usual and not exercise as much, thus gaining weight (usually about 15 pounds)

When a first year college student comes back the following year and appears to have gained about 15 pounds from eating too much and not enough exercise.