a sexy student, usually attending a private school, who wears clothes from leading name brand clothes, e.g. Abercrombie, American Eagle, Banana Republic, Polo, JCrew, and refuses to buy clothes at KMart, Target etc. A prep usually watched all the popular shows, e.g. The O.C., 24, and Laguna Beach. A prep can only date a prep, and a prep must be above a 7 on the 1-10 scale to be fit in the "prep" catagory.
The sexy stud from Prep (bethesda, maryland) wore that HOTT polo with his Tim's and chorduroy's. That prep is wearing the same shirt Kayne West wore in his last video.