My 2 yro has changed a lot recently he used to be full of hugs and kisses now he has swapped that for smacking me throwing things at me and nipping me or hurting anyone around him on purpose.he seems to do this mostly when he’s excited but he will still do it in a normal mood.i don’t really know how to tell him off as silly as it sounds,he does not listen if I tell him of normally like look him in the face etc he simply just laughs ,if I tap his hand to tell him off he still laughs.i do not persevere with putting him on a naughty chair as he does nothing but laugh and run away and carry on slapping me if I get him and tell him off.his dad finds it easier to hold him in his arms so he can not move(not in a painful way at all ) but I still don’t like this sort of telling off ,so I really need some new techniques as it’s starting to get me stressed and it’s also straining me and my boyfriend relationship,please help .thanks