Family Guy, and I'm shocked that South Park got 30 votes. It was funny back in the day, but it hasn't been funny for a long, long time.
I've heard that the creators (Stone and Parker, I think?) are purposely trying to cross the line and get kicked off the air because back in the day they signed a really long contract with Comedy Central and they're really getting shortchanged not that South Park is such a big franchise.

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