South Park: Season 13, Episode 1

13 - 1: The Ring

Kenny has a new girlfriend and her name is Tammy. When the boys find out she's a bit of a slut, they feel the need to tell him. Rather than being upset about it, Kenny is ecstatic. After hearing she's this way because of the Jonas Brothers, Kenny buys two tickets to their next show in Denver. His plans are quickly diminished after the Jonas Brothers give Tammy a purity ring.