But throwing a ball hitting someone's arm never did any harm before
...or? Anyway, I'm sure everyone agree you didn't mean to hit anybody, and that you both can have a healthy laugh at the whole incident soon enough
k:
As for your bro well, that's part of having bros
It will pass. He might be a bit miffed if you "interfered" with his pc usage, but it won't last, I'm pretty sure. Bros are bros no matter what, so with yours