The creator of The Simpsons, Matt Groening, says Fox News threatened legal action after an episode poked fun at the channel.

The episode featured a “Fox News Crawl” at the bottom of the screen. It read: “Pointless news crawls up 37 per cent … Do Democrats cause cancer? Find out at foxnews.com … Rupert Murdoch: Terrific dancer … Dow down 5000 points … Study: 92 per cent of Democrats are gay … JFK posthumously joins Republican Party … Oil slicks found to keep seals young, supple …”