This was supposed to be a face-off between Jake's brother, Logan Paul, and 44-year-old Mayweather, who are due to have an actual fight next month.
But Jake had other ideas and bounded in, stole the undefeated boxer's hat off his head and shouted 'gotcha cap'. He's a grown man, y'know.
Mayweather's entourage chased after the YouTuber for a few steps before trying to get the hat back, which seems to have left the 24-year-old Paul brother with a nice little shiner.
But he's adamant that it didn't come from Mayweather, taking to Twitter and telling his fanbase: "Honestly have had 3 easy fights as a pro so been itching for some real action."
He then added: "1 of Floyd's 30 bodyguards got a clean shot on me in the eye."
honestly have had 3 easy fights as a pro so been itching for some real action
1 of Floyd's 30 bodyguards got a clean shot on me in the eye
- GOTCHA HAT (@jakepaul) May 6, 2021
Mayweather has now broken his silence on the little brawl and has accused Paul of 'disrespecting' him.
Speaking about the incident, the boxer said: "It's one thing to sell a fight, and people can say what they want, but one thing no one is going to do is disrespect me."
Unsurprisingly, it didn't take long for former UFC champ Conor McGregor to react to the scuffle - taking to Instagram, he said: "The kid curled up, didn't fight back once, and Floyd is still running around acting the tough guy.
"The kid actually just pulled this shambles of a situation, Floyd is in out of the drain for him. He should thank him.
"It's embarrassing! Pro to pro it's embarrassing.
"He will not scratch 10m for this fight and he knows it. It was cancelled once already. The world is watching this on Twitter. He'd fight a half decent pro and command 20m upwards, yet it's this s***.
"Whatever way you spin this, it's sad. Fight someone for real, on your record, or f*** off mate. Slap head!"
Logan Paul and Floyd Mayweather are due to step into the boxing ring next month and hype is certainly building - with a little added help from Jake.
Chosen for YouChosen for You
Most Read StoriesMost Read