Can you explain it to me. Then they all pick up on it. The second isn't actually a reference to puss, but it's when Cartman's cat is bugging him for some pie. The joke there is that if the cat was a dildo, then the mom would use it. Use your imagination.
Directions are there.
It's her if you think in terms of appearence, but no actual proof is given. A. Yep, sometimes multiple times per episode. Go to a mirror site there. It's a hefty 50 megs and might take awhile to download. Les Claypool Heading on up to South Park, gonna see if I can't unwind.