My 6 yr old son has started baby talking at home. He doesn't do it at school. He knows it infuriates me. He picked up this behaviour from a boy in his class. The other boy behaves this way in school. It drives me crazy when he does it at home. I ask him to stop and he does for that moment but then starts up again. I have an almost 2 yr old daughter. I think my son does it because he knows I don't like it and it will get my attention. I don't know what to do.