Golden rule. Do unto others as you'd have them do unto you. He wanted to sucker punch people, he got sucker punched. Dude was a huge pussy and I'm 100% glad and applaud the guy who flatlined him. It's one thing to sucker punch a guy like that when he is already in a battle with another willing participant, it's something else entirely when you're bullying someone, someone who offered a handshake, and being an obnoxious cunt bag just looking for attention. Happy the guy in the gray shirt taught him that sucker punching isn't cool.