I almost got stitches because of my sister once

I accidentally gave my sister two long scars on her right leg, told mom she tripped over some bags and hurt her self. Which isn't a lie I pushed her and she did trip

My brother once pushed my twin sister into a glass case in our house and it shattered aganist her.. She got a small cut but my brother was freaking out to not tell our parents who were on vacation that whole week. So, me and my sister got the upperhand on him all week.

My sister pulled my arm out of socket when I was five

The worst my brothers did was give me wedgies

I sliced my sister's hand to the bone when we were teenagers. In my defense, she did grab the blade of the kitchen knife I was holding (and teasing her with) and refused to let go when I told her to. She is still that stubborn.

I once gave my sister a welt that lasted for a month after whipping her with a strappy bathing suit.
She was teasing me.
She had it coming.