The Prince's Grilled Cheese

I just couldn't resist posting this latest funny moment by Hudson. Last night we were getting ready to eat dinner. Rob had a grilled cheese sandwich for Hudson on a plate, and as he put the plate down in front of our brilliant child, he said, "And here's the prince's grilled cheese sandwich..." to which Hudson immediately and indignantly said, "I'M NOT A PRINCESS!" Ahh, the intricacies of grammar. How does one explain the concepts of apostrophes, possessives, and plurals to a 3 year-old? Oh, but I must find a way!