The situation is absolutely different when your child consciously begins his older brother or sister to call abnormal, and mom-stupid. This time he understands that the word is not good and is specially expressed so. In this case, it is necessary to strictly explain to the baby that in your family it is not customary to express himself like this. But do not punish him. You just need to try to explain that it is bad to say so and that parents do not do that.
