Jessica Simpson

Fox and Burger King have apologized to Jessica Simpson for their "poor attempt at humor" in an NFL animated skit that mocked her weight.

The spoof, which aired during Fox NFL Sunday and was sponsored by Burger King, featured cartoon versions of Dallas Cowboys players poking fun at the singer's physique, which has been under scrutiny for the past year.

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Among the jabs: "Man, I still can't believe Tony [Romo] dated Jessica Simpson, even after she blew up bigger than Flozell Adams!" says an animated version of Cowboys running back Marion Barber.

"Burger King Corp. did not have any editorial input in the creation of the animation that ran last Sunday, and no one from Burger King Corp. approved it before it aired," Fox said in a statement to Us Weekly. "Upon reflection, our poor attempt at humor was insensitive and we deeply apologize to anyone who might have been offended."

The fast-food chain added: "Burger King Corp. has a long-standing relationship with FOX Sports, as well as an extensive media partnership with the network. The specific content for this sketch involving Jessica Simpson was not developed or aired by BKC or any of its agencies."

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Calls to Simpson's rep were not immediately return, but the 29-year-old chimed in via Twitter on Wednesday. "I will never understand why people attack for a laugh," she wrote. "Own your beauty and don't listen to the judgement [sic]."