Oh hell yes. Fire when ready.
Legally you'd be ok wouldn't you, in the home you live in while feeling threatened, should all younger brothers now be armed, as usually its older brother threatening younger.
Can I shoot him in the USA?Say like he uses my playstation without telling me, then throws the controller at my head, while we are in parents basement, I feel threatened as he is currently doing crossfit.
What game was he playing? If it was a a violent one your good to go.
Just yell "he's coming right at me!" Before you shoot and you should be okay. If he's black you might have to prance through a sham trial though
depends on the console