Mine definitely went through a (loooong!) phase of being very slappy and flat out laughing in my face when I told him off. He is big for his age and he was so rough with me, not always on purpose but sometimes yes I got a smack or a push. It is so bloody hard but I just kept saying the same stock phrases “we don’t hit” “we use kind hands” etc etc. If he hit me on purpose he went straight to time out which was in the armchair with me watching him but not talking to him. After a minute I’d say, “you hit mummy. That wasn’t kind. We use kind hands like this” then I’d stroke his arm or something. I’d ask him to say sorry as well, which he wouldn’t always.
Loads of praise for kind behaviour and try and demonstrate kind hands as much as possible. “Oh look mummy’s got teddy for a cuddle, kind hands on teddy, can you do kind hands with teddy?”
If he laughed at me I would stay really calm and turn my back or put him in timeout after a warning. He’d quite often go from laughing to raging so it was about as much fun as a fart in a spacesuit.
Basically he was pretty vile from the age of 2.3 to 2.8 and suddenly he became a much nicer human. Also he didn’t sleep. So we’ve only got one 