Boards don’t hit back

I’m a big fan of Bruce Lee. Sure this doesn’t really have anything to do with NYC, but hey, it’s Bruce Lee. So check out one of the coolest scenes in the Bruce Lee film “Enter the dragon.” Here he says “Boards don’t hit back.” Followed by a solid ass whooping! What is the takeaway here? Don’t kill Bruce Lee’s relatives, and then try to fight him in a martial arts contest.