At Nebraska, the thing we do is steal Composites of houses of the opposite gender. Then the house must find out who stole their composite and set up a time to serenade them. The "theives" in the mean time will decorate the composites with all sorts of sexual innuendos and the like. Sometimes the decorating gets down right mean, and I've heard stories of some Frats putting things like "slut" or even the number of guys in the house that girl has slept with or worse.
It is difficult sometimes to do obviously carrying a huge composite down...(hmm that's not suspicious at all
) but it's usually a lot of fun. We tended to do it anytime, but mostly on slow nights during the weekend when we didn't have a party or anything. Most Sororities will do it as part of their pledge Class sneak, where they try to get as many as possible. KD I think are the queens of composite stealing, as I often see ads in the Paper saying whose composites they have...