This might make me worst or best mom ever but I loved this game. I've never been a big fan of South Park but I picked this up after watching my stepson play the first part and laughing my head off with him. If you allow your kids to watch the TV show, it's only bit worse than that (the TV show at least has to abide by some TV restrictions). They certainly don't pull any punches and aren't afraid to go the extra steps for the "OMG did they just do that??" factor.
Now, I don't want to be a downer or get to serious about South Park, but the issues they make fun of are real and people are sadly over sensitive, and while I'm sitting on the couch with my son busting up with him, I'm also turning to him and saying "Don't you dare go to school and repeat this!" I also made sure I called his friend's parents and get their okay to let them play it.
Here are the worst things parents should know that are in the game: Full nudity, sex scenes, scenes of abortion and of dead fetuses, forced sodomy fully shown, depictions of gay/lesbian couples, drug/alcohol use, satanic cults (and finding Jesus), lots of violence (hilarious, brutal cartoon violence with horrible weaponry), and exposure to Al Gore.
Other than that, it was a great bonding experience with my son, and maybe.. just maybe it may have taught him something about social issues. Just kidding.