If you've spent enough time on the Internet you've probably stumbled across Charlie Zelenoff before. If this is your introduction, welcome. I will allow Bill Burr to sum him up for you.
"He's got some sort of issue. He just goes around. He just fucking goes into gyms and tells people he's the greatest. And goes 'Let's spar.' And they have no fucking clue. Ya know, he just goes in and he fights an accountant and the accountant just kind of puts his gloves on. And the kid swings for the fences and he fucking knocks out an accountant then turns around, 'Did you see that? One punch!'
Here's a compilation of him fighting clueless people and then attacking them before they're ready:
He sucker punched boxing legend Floyd Mayweather Jr's dad in a sparring match:
And he harassed pro-boxer Deontay Wilder until Wilder actually flew to Los Angeles and beat him down:
Here's Charlie getting mercilessly destroyed by a 16-year old boxer:
Check out Charlie Zelenoff's youtube channel if you want to go down the rabbit hole:
https://www.youtube.com/user/3timeWorldChampion