South Park isn't bad. It's the complete opposite. It's the greatest show ever. It's better than Family Guy, because Seth McFarlane is a total a**hole and Trey Parker and Matt Stone are awesome. The only reason it's "bad" is the because of the language.
Go to the Poke-Gear and then go to the radio. Go to the radio station on the top right (The Pokemon Show) and it will be announced on the radio if it's the day Mawile shows up.