Knocking on people and showing it to the internet is not how you do it.
Infact, if you know your spot, you won't fight at all.
(I'm a very hard fight sport practicer, I once fought in my whole lifetime, and broke someones eyecass with a single hit.)
If you know you can do this, but dont ever do it again, no matter what reason, then YOU are a true champion, a true winner. You dont win by kicking a random persons ass, thats not how winners work, if you want to prove yourself to anyone, prove yourself when fear and danger is surrounding you, not when a few fists are about to reach your face.