Ep 1. The Ring

In South Park season 13 episode 1, entitled "The Ring," the town comes down with a case of "Tween Wave," a new obsession with purity rings. When Kenny gets himself a purity ring to impress his girlfriend, he soon discovers the true meaning of the jewelry. Meanwhile, Butters becomes obsessed with the popular Twilight series and starts to believe he's a vampire. As the town falls deeper into their obsessions, the boys must find a way to break the spell before it's too late. With its trademark humor and political commentary, "The Ring" is a hilarious commentary on pop culture and the way communities interact with it.