On the train. Micah is wearing Oliver, standing, holding onto a pole. Oliver reaches out of the carrier, grabs onto the same pole. He notices Micah’s hand above his. He reaches up, grabs Micah’s fingers, pulls his hand off of the pole. He resumes his position. Mission accomplished: the pole is his, and his alone.
I’d say he learned it from his brother, but I don’t think he was around 2 1/2 years ago when that was all the rage with Simon.