We can't really answer that..We don't know what the deal is but remember, if you want respect in life,fighting isn't the way, no matter what anyone says. It proves nothing. It takes a mature and level headed person to: A. Admit he's wrong or communicate peacefully B.Shake hands C.Move on with your life in the right direction.. D. Make good choices
Depending on who brings something stupid to the fight, knives - guns... convince your bro in law to not show up too. I can list so many reasons: early death, permanently disabled, winning a fight isn't winning an arguement, police records, never knowing if it's over, broken bones, severed spine, concussion, bleeding internally, having to always look over your shoulder, scaring loved ones, being stupid & only thinking of yourself & what you think you have to prove & no one else.