And as far as I know Port has no interest or understanding of this kind of play; big brother is just being his silly, normal self. Occasionally Port will bring me a pair of sunglasses (I guess they remind him of Kiddo's mask) and have me put them on his head (a million times) so he can run off grinning and rip them off his face seconds later.
But for some reason the other day, when Kiddo raided the receiving blanket drawer for a fresh polka dotted cape, Port eyed me curiously as I tied the blanket around Kiddo's neck. The next thing I knew, he had vanished somewhere in the back of the house. I called him, and he came down the hallway with not only a huge grin on his face, but a little receiving blanket from the drawer. He handed it to me and then turned his back to me, in the same way Kiddo had just minutes before. Taking his cue, I tied the blanket around his neck and gave him a cape.
Obviously, he liked it! :-)