Mike Tyson slapped Jake Paul for stepping on his foot as their pre-fight weigh-in boiled over. 

Seemingly out of nowhere, Tyson smacked Paul in the face at the Las Colinas, Texas, event ahead of their Friday boxing match at AT&T Stadium.

Paul responded, “He hits like a bitch … He must die.”

Tyson claims to have not even heard him.

USA TODAY Sports via Reuters Con

The smack was Tyson’s reaction to upstart Paul stepping on his toe, which he thinks may have been on purpose.

“I was in my socks and he had on shoes,” Tyson told The Post moments after the weigh-in. “He stepped on my toe because he is a f–king a–hole. I wanted to think it happened by accident. But now I think it may have happened on purpose. 

Mike Tyson is interviewed during the ceremonial weigh-in with Jake Paul.

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Jake Paul and Mike Tyson face off during weigh-ins at the Toyota Music Factory.

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“I was in a lot of pain. I had to reciprocate.”

Asked what he would say to his 27-year-old foe right now, if they were together, Tyson responded sharply: “Talking’s over.”

A representative of Tyson told The Post: “Jake has been poking the bear the whole time. Mike slapped the s–t out of him.”

Promoter Nakisa Bidarian, center, co-founder of Most Valuable Promotions, steps in the way of Mike Tyson, left, after Tyson slapped Jake Paul during a weigh-in.

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In the ring on Friday night, he predicts that he will do the same. 

Asked if he will knock Paul on his ass, Tyson simply replied, “Yes!”

In terms of his view of the YouTube star, Tyson made it clear.

“He’s more of a clown than an entertainer,” the 58-year-old ex-heavyweight champ said. “He’s a clown. He needs to stop playing.”

Jake Paul reacts as he is introduced the ceremonial weigh-in with Mike Tyson.

As for his mindset ahead of fight night, set to stream on Netflix, and what may go down in the ring against his much younger opponent, Tyson — who hasn’t fought in an official match in 19 years — said, “I don’t worry about anything but winning.”