Question: What channel did the two South Park episodes "Cartman's Mom Is a Dirty Slut" and "Cartman's Mom Is Still a Dirty Slut" premier on in the United States ?
Sentence (from "Cartman's Mom Is Still a Dirty Slut"): The 15th episode of the series overall, it premiered on Comedy Central in the United States on April 22, 1998.
Relevant evidence: Yes