When I was young, I gave a right-elbow a Virginia Tech football player in the jaw and escaped his 100-lb differential fight only to run into him a year later when apologized. He undeniably had the advantage six ways to Sunday. After he hammered my right kidney twice (I peed blood for a couple of days) I right-elbowed him in his jaw, twice. The first time jarred him. That gave me a split-second chance to give it all I had, and since he was still sitting on top of me, and I could not shake him off as he outweighed me by roughly 100 lbs, I let him have it. Right elbow to his jaw once, which disoriented him, and a second shot with everything I had, as he'd already induced massively painful punches into my right kidney. I didn't know it at the time, but he caused serious damage.
That was in the Spring of 2006, I think. In the fall of 2007, I was invited to attend a party by my next door neighbor, and woah! It turned out to be the same fraternity. Turns out, the guy who attacked me was my next door neighbor's friend, so here we were and before I knew it, he was introducing me to his friend who had invited us to the party.
My Friend: Hey, X, I'd like you to meet Y, my friend and next door neighbor!
Big Guy: Hi, how are you?
Me: (Shaking Big Guy's hand): I'm fine, thank you.
Big Guy: Um, you look familiar...
Me: Yeah, you do too.
Big Guy: You're the one?
Me: (I wasn't connecting the dots) The one"
Big Guy: Yeah. You. Last Spring
He was sitting on a couch. I was standing up. At the point I realized that, I also realized that was the guy.
Me: Oh, that. Are you OK?
i think that set him off.
Big Guy: Well, you broke my jaw in three places.
Very uncomfortable silence.
Me: I'm sorry. I didn't mean to.
Big Guy: (very big pause, him of 220 lbs sitting on the couch, me of 160 lbs standing in front of him), That's ok. I shouldn't have attacked you.
Me: Uh...
And that's about as civil as things got before I shook his hand and departed the fix. Kudos to him, whoever he was, for not bone-crushing me during our second meeting.
Hey, Mike: THANKS.
In 2009, I flung some 300 lb Sumo-schmuck into a pool as he accosted me. I'm a student of Aikido aka "protect your attacker." He lived without a scratch, but exited with a healthy respect for anyone "retired air force" which is all I gave him. He exited the pool complex along the maximum perimeter.