Does anyone have any suggestions about how to stop my DS from grabbing and hitting faces and pulling hair? He is quite a big strong boy and finds it all very funny when I say a firm 'no' and take his hands away. He giggles and does it again. Should I continue down this route and have faith that as he gets older he'll start to understand no? Should I put him down when he does it? i know he's little, but I don't want him to learn it is ok, especially because he spends time with other babies and children and can be pretty rough!