The boys decide to get all "mature" on Y.T. Males of this age are preoccupied with snapping each other's underwear and drinking until they are in a coma. But around a female, they do the "mature" thing. It is hilarious. One of them steps forward slightly, interposing himself between Y.T. and the nearest proto-chick. "Welcome to Nova Sicilia," he says. "Can I assist you in some way?"