"Cartman Joins NAMBLA" is the fifth episode of the fourth season of the animated television series South Park, and the 53rd episode of the series overall. Going by production order, it is the 5th episode of Season 4. It originally aired in the United States on June 21, 2000, on Comedy Central. In the episode, Cartman, in search of more mature friends, accidentally joins the "North American Man/Boy Love Association" (NAMBLA), and puts all the boys of South Park in jeopardy as a result. Meanwhile, Kenny tries to stop his mother and father from having another baby. Plot After deciding he is too mature to hang out with Stan, Kyle, and Kenny, Cartman looks for older male friends in an online chat room full of eager men who Cartman believes want to be friends with him. They are actually Internet predators who prey on young boys. Cartman meets one predator at Mel's Diner, who is quickly arrested for soliciting sex from a minor. The next day, Cartman meets another predator who turns out to be Mr. Garrison, who is also arrested. Cartman doesn't understand why this keeps happening and naively concludes that Stan and Kyle are responsible for the arrests. Cartman visits Dr. Mephesto to ask where he might find mature friends. Dr. Mephesto recommends joining an organization known as NAMBLA. Cartman joins NAMBLA and is made their poster boy. The organization holds a banquet in Cartman's honor and asks him to invite all the boys in town. Cartman does so, with the exception of Stan and Kyle. Federal officials, having learned that NAMBLA is meeting in South Park, raid the venue. However, they discover that they have raided Dr. Mephesto's group meeting of the North American Marlon Brando Look-Alikes. The FBI teams up with the Marlon Brando lookalikes (who have been trying to get rid of the other NAMBLA for years) to stop the other NAMBLA's banquet. There, all the boys in town (including Stan and Kyle who were also invited) are in attendance, unaware of what is in store for them until the pedophiles take them to their hotel rooms, after which the boys run screaming in the halls. Meanwhile, Stuart and Carol McCormick are trying to have another baby. As Kenny does not like the idea, he tries to stop them by throwing a fastball at his father's crotch to shatter his left testicle. When his mother