I didn't even have to go in this thread to get my point across. :o
Regardless, revenge isn't the answer. He shouldn't have been throwing rocks, of course, but "getting him back" will most likely lead to more violence in this case. Just let it go before it gets too deep.
I would have the same mindset if someone hit me with a rock, he likes airsoft because its a good hobby to have because its great exercise.
I've been hit with rocks before, I never had this reaction. And if he likes it so much, then he shouldn't take the game so personally. Granted, neither should they, but we can't do much about that at this point. :o
I had a similar situation in worms. Somebody struck me with lightning, and healed me 30 health. Then I used my concrete donkey to kill the last 2 of his team. He called me a cheater and said it was unfair :P Then he steamed me saying I should've skipped me turn because it was a douchebag move to kill him.
._.
And thank ye Rokn and Cyanian for expressing the same point. c: