Blame Canada...or anything else

Cartman would probably say that Kyle's mom has never looked more "bitchier."

UPDATE, 12/23/2020: It has become important to point out that while the image and title refer to the song in the movie, let's not forget the REAL meaning behind it. While the parents were fussing over where they figure the problem arose, they exposed their own ignorance while doing so. It's like the last two lines state:

We have to blame and raise a fuss
Before somebody thinks about blaming us!

Showing it's more a jab at themselves without their knowing it, not their intended target. Something for some to think about. Still, considering it wasn't her only reason for outrage, the title has been extended.