Jimmy Johnson has called out Skip Bayless over a strange claim about a famous Cowboys trade.

While discussing the Herschel Walker trade that took place over 31 years ago with “Undisputed” co-host Shannon Sharpe, the inflammatory sports pundit made a claim that Johnson — who was head coach for Dallas at the time — asked him for advice before moving forward with the deal.

“Jimmy actually came to me,” the Fox Sports host said on Thursday. “It was the Saturday before the Monday trade, and asked me, ‘What if I told you I could trade Hershel Walker for a king’s ransom?’

“That’s what he asked me.”

Walker, now 58, was the centerpiece of an Oct. 12, 1989 deal which was the largest player trade in NFL history. The transaction involved three teams — the Cowboys, Vikings and Chargers — and 18 players and draft picks including Walker.

Bayless stated Johnson came to him to ask his opinion on the deal knowing he could get a bevy of draft picks while Bayless was working as a journalist for the Dallas Times Herald.

“I said, ‘Seriously?'” he said. “Because I wasn’t a big Hershel fan because he was nearing the end of his run. … He was battered and he was just about finished.”

Johnson, who work for Fox Sports as well, denied this conversation took place as Bayless describes it and fired back on Friday morning.

“Never said this!” he wrote on Twitter in a quote-tweet of the clip.

Johnson, 77, served as head coach for the Cowboys from 1989 to 1993 and apparently wasn’t enamored with his star rusher at the time.

In the decade following the trade, the Cowboys made good use of the draft capital and won three Super Bowl titles in 1993, 1994 and 1996.

“We were already 0-5 with him, the worst team in the league,” Johnson said in 2014 while looking back on the trade. “We were old and slow, and we needed to jump-start the rebuilding process. I had to figure out a way to parlay our best asset into a whole team. … I knew we couldn’t wait to build the team with our regular picks in the draft. We needed a lot of picks.”

Bayless has long had a feud with Troy Aikman, the quarterback who engineered that Cowboys dynasty. Bayless wrote about unsubstantiated claims that Aikman was gay in his 1996 book, “Hell-Bent.”