The Simpsons has a long history of making fun of the company that airs its program, especially a certain branch of that company that touts itself for its "Fair and Balanced" news coverage.
They continued that tradition with a jab at the 25th anniversary of Fox network. The Simpsons celebrated the milestone by airing the show's first episode, only this time with a little message thrown in: "Congratulations FOX on 25 years... We still love you*
*This doesn't include Fox News."
Past News Corp and Fox News jabs...
Bill O'Reilly chimed in the last time The Simpsons took a jab at Fox News, calling them "pin-heads".
"Continuing to bite the hand that feeds part of it, Fox broadcasting once again allows its cartoon characters to run wild."
The Simpsons responded with another jab at Fox News in the following weeks episode, "Fox News: Unsuitable for Viewers Under 75".
The Simpsons executive producer Al Jean has said they will stop mocking their corporate relative. So far, they have continued to mock them, anyway.