Bathtub Bubbles

William surprised us this evening during bathtime when, after watching Thompson put his face in the water to blow bubbles, he did the same!  WY would start blowing air through his lips while slowly lowering his face until his lips hit the water and he was blowing bubbles.  Once he realized he was successfully copying T, he'd blow bubbles and then sit up proudly to clap his hands as if to say "good job".