Daisy, I think all that is standard. If that makes you feel any better.
I hear it regularly.
Sometimes I like to say "Would you? Would you really like me to die? And never see me again? Ever? I'd be gone forever" but thats quite cruel I guess. Mostly I say 'that's nice dear. now go to your room before I get angry."
Worst thing I did yesterday was laugh when DS1 was attacking me. What started off as him going for me with a slap ended up with him clawing my arm as hard as he could in sheer frustration.
DS2 has started to have angry hissy fits as well. But I am still bigger than they are so if I put my hand at arms length on their forehead they still can't reach me.
DS1 frequently wants the others to die, or he wants to die or kill himself. Tis all for effect. Oh, the other one is 'I'm so stupid. I don't deserve XYZ". That one is far more effective. And the bugger knows it.
Do girls do it, I wonder? Or is it a boy thing?