Argh! I'm a pirate

I took Ro and Sim to the kids museum today. While we were playing in the boat area, a seven(ish) year old boy ran up to Ro and drew and imaginary sword and ordered him to "Surrender your ship!" Ro looked at him for a second and then said, " I have a cannon ---- and a cannonball." They proceeded to shoot each other and dance around each other quite a bit before the kid ran over to another tower and started shouting at Ro he was coming to get him and take his ship. They played really nicely together for about half an hour being pirates. Ro would even say, " Argh! I'm a pirate!" here and there. It was fun and sweet. I need to find Ro a little eye patch.