Logan Paul once knocked out a 350lb man with just a slap in preparation for a slap-boxing tournament.
The social media star had yet to make his professional boxing debut when he decided to take part in a competition where competitors slap each other until they knock out their opponent back in 2019.
He had boxed KSI in an amateur contest with large gloves and head gear and was an athlete of some renown in high school wrestling, but had never competed in such a brutal sport.
But he was forced to pull out of the tournament, taking a substantial financial hit, after brutally knocking out a 25-stone training partner with one slap.
"I was supposed to go to Russia to compete in like the bootleg first slap fighting tournament they had," Paul told the MMA Hour. "I had seen this phenomenon.
"There were these f***ing guys standing across the ring from each other slapping each other and I thought it was the most ridiculous thing ever.
"We scripted an entire mockumentary where we would go to Russia in the vein of Sacha Baron-Cohen and actually do the thing but put a whole storyline around it.
"We did this with the flat earthers, I fully infiltrated the community and told them I think the earth is flat, I don't think the earth is f***ing flat, we scripted this whole thing and I was going to do it."
But the trip was abruptly cancelled when Paul felt first hand the possible outcomes of the brutal sport, which he will bring to America with the help of Arnold Schwarzenegger this weekend.
He viciously knocked out a man brought in to take the slap, to a point where he claims that an hour after the stunt, he still wasn't sure who he was.
And Paul wasn't keen on either doing something like that to another person, or feeling those affects himself.
"I ended up slapping this 350lb guy, this slap master from the States," Paul continued. "I just wanted to test because I've never open-hand f***ing slapped a human before.
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"I knocked him out cold, like cold, cold - starched him to the point where after I hit him he didn't even know who he was.
"He was 6'3", 350lb and it was like 'damn', I believe I could do that to anybody standing across from me.
"But what if that happens to me because they can do it too, dude? What if I lose the coin flip and I don't get to go first and I get demolished to the point where I don't know who I am.
"That was concerning so I backed out, but now I get to host the competition and watch these crazy f***ing dudes slap the s*** out of each other.
"I took a $30,000 loss because of getting our whole team visas, booking flights and accommodation for Russia, getting hotels and everything. I took $30k to the chin by cancelling the trip."