A theme party, invite-only, that is usually held by a fraternity or sorority, where each member of said organization gets to "crush" or invite two people or so. The names of the crushes are in our school newspaper along with information : when and where it is, almost always off campus (so the obligatory collegiate drinking and carousing can occur). And if the sorority or fraternity remembers, the crushes should get a t-shirt with the party's theme on it.