When Sweet Pea first became mobile, the most common words that we said were "No, don't touch". That helped to teacher her the boundaries and not to grab things that might fall on her head, etc. As she learned and became more active, she quickly figured out what she was and was not supposed to do. Those words came out of our mouths less often, and pretty soon they were only uttered every once in a while to reinforce something. It felt great that those days were finally past us - oh, how wrong we were!
Sweet Pea is now fully into her "terrible twos" phase, and once again the most common phrase in our vocabulary is "No, don't touch!" Unfortunately, now she is fully aware that she is not supposed to be doing it, but she feels the need to test her boundaries and see just how much she can get away with. In fact, she will look at us and get as close to the object as she can without actually touching it just to see our reactions. On the one hand, it is quite frustrating, but on the other hand, it shows that she has fairly good reasoning skills, since she is not technically doing anything wrong until she actually touches the object. I wonder if she will be a lawyer when she grows up - lol!