Show me your teeth!

We are working with Clayton on the body parts. He understands them all and can point to them when he wants to! Well when we ask him where his teeth are he sticks his tongue out. Mr and I were wondering why he does that because we show him our teeth and he gets it. One day when I asked him I watched real close and realized that he was taking his tongue and rubbing them over his teeth. Covert cutie!