Some stars just have no class, willing to bare anything and everything to anyone who will listen, but for "Jackass" star Bam Margera, a celebrity dad isn't going to let him off the hook so easily.

Jessica Simpson's father is furious with the "Jackass" - literally - for making claims he slept with his daughter.

The loudmouthed hell-raiser made the claims during a recent radio interview with shock-jock Howard Stern.

Jessica's father Joe fumed to Us Weekly, "As a father, I want to go beat the c**p out of people who say things like this. It really hurts to hear people say things like this about my daughter."

Bam stands by his claims that he spent the night with the "Dukes of Hazzard" actress while she was still married to ex-husband, Nick Lachey.

He told Howard Stern, "We wound up at her parents house drinking margaritas and it went from there. I left at eight in the morning."

When the host asked if Jessica looked good naked, he replied, "Yeah, she looked good. I can't deny that!"

Meanwhile, Jessica recently revealed how baking cakes got her through her breakup with Nick.

At the premiere of her new movie "Employee of the Month," she confessed, "I made cupcakes here and there. I love to bake so I would bring stuff to set all the time."

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