Jessica Simpson's father is furious with Jackass star Bam Margera.

Joe Simpson has admitted that he wants to "beat the crap" out of the professional skateboarder for bragging about sleeping with the Dukes of Hazzard star when she was still married to Nick Lachey.

During a radio interview, Bam explained: "We were just drinking margaritas and stuff, and you know, from there…"

He also told US Weekly: "It was when her parents were away and Nick was away. It's not a secret."

In response to the claims, Joe raged: "As a father, I want to go beat the crap out of people who say things like this. It really hurts to hear people say things like this about my daughter."