Dude, I had this step mom, my dad's second wife.Amen to that. I grew up in an abusive household with an extremely abusive grandmother, it wasn't good at all. My grandma had mental problems, maybe early onset dementia, I'm not sure.
Naturally I was a messed up in the noodle type of kid, this woman, I was her stress ball.
She would hit me in the head with spraypaint cans, and tell my dad it was spider bites!
Then...one day she got extremely malicious, I can't remember what I did, but I did something.
This person, she got a steak knife from the kitchen and held me down while she sliced each of the webbing between my fingers really shallow.
Then made me cut tomatoes.
You ever get fresh tomato juice on a cut? It is acidic to say the least, and being mostly water it wouldn't allow clotting. It hurt man, like real bad.
She liked doing that.