Freshman will hide in their dorm rooms unless you drag them out. Freshman walk into the wrong classrooms, or open the door not realizing that a class is still going. Freshman try not to look like freshman. Freshman travel in packs if possible. Freshman cannot work the cereal dispensers in the cafeteria.
Freshman assume that everyone is older and more experienced than they are.
The problem with this is that the freshman grow out of this stuff real quick. You won't see very much of it past the second week of school. Wearing an outfit entirely consisting of university stuff- hat, shorts, shirt, pen, etc.