Keeping up with big brother

Ethan, at 16 months of age, does not appear to think that 20 months of age difference should prevent him from doing all of the things his big brother does. He wants to swing on big kid swings. And I discovered recently that he has been secretly practicing with Emerson's scooter in the hallway when I thought he was quietly playing with blocks. His capacity for imitation is actually pretty amazing and he mimics everything Emerson does - good and bad. This currently includes Emerson's obsession with shouting "boo" repeatedly and with increasing volume and duration. (Yeah, no video of that one. You're welcome.)