“We have a “First Day” rule. You are not allowed to ask to play with or use any toys/items of your siblings on the first day they receive them. So birthdays and holidays that you get presents, you do not have to share with the others. And if they try, you get to yell “First Day!”
It got to the point where one of us would 'accidentally' knock something over so that he'd leave and we could eat our dinner in peace.
#10 - Intro to cannibalism ?