when i was 13 at a boyscout camp, my geeky friend got into an argument
with another kid over who could tie a faster square knot.
my friend insisted that he was faster but the other kid cussed out my friend
and even had the nerve to stick the middle finger straight to his face.
so my friend stepped to him and made a fist and swung, but he stopped in mid air and let out a yell as his fist was about 6 inches away from knocking out the kid, my friend started crying uncontrollably and couldnt move as almost like he was frozen.
I jumped in between the two of them and yelled at the other kid to piss off.
the other kid was so ticked off at me that he took a swing at me, but he stopped in mid air and yelled in a screeching furious voice..."NNNNOOOOO!!" then soon after cried as if I had hit him or something.
the sheer tone of his voice scared the ba-jesers out of me as I started to cry out of shock that he would be so bold to yell at a stranger.
I wasnt about to be punked by this kid, especially after remembering what my father taught me about how to handle bullys.
so I yelled back at him, not sure what I was trying to say but it sounded something like this..."EEEEEEKKKKKKKKKDDDDDDDDDD@#$@#%$%@#%@^!
that really ticked the kid off and he came at me. seeing how angry he was I turned and ran for my life while crying out to my scout master for help, but the scout master was no where around. the kid chased me around the entire camp and it almost felt as if i was running in slow motion, i thought the kid was going to murder me so I yelled as loud as i could hoping some adults in the other valley could answer my sos call.
i saw a big stick and picked it up just in time as the other kid was about to do a mike tyson on me, after he saw that i had a big stick he yelled for his life and started to run away from me crying hysterically.
I chased him until he was too tired so he turned around and yelled at me and started to grunt at me kinda like a wild boar as if he wanted me to hit him.
So I lifted the stick and swung at his head, I wanted to take his head off I was so freekin mad I swear I was gonna kimbo slice his @ss into pieces, however I stopped in mid air and let out a yell "EEEEEEKKKKKKKKKDDDDDDDDDD@#$@#%$%@#%@^!
we both started crying even more. then we sat there till we stopped crying.
the next day we had mad respect for each other, the three of us were best buds and we knew that if anyone ever f#uckd with us that we would have each others back.
true story bros...
but to answer your question, no, but I have come close many of times to knocking out other people.