Exploring carbonation

Yesterday Jonathan got a small can of soda and a cookie from school, and he immediately decided to give Seth a full half of his cookie, and some of his soda. I'm so impressed with his generosity. It was so funny while they were drinking it, because you would've thought it was whiskey by watching their expressions after a swig. They describe that carbonation burn as being "spicey," or "ficey" for Seth. After a drink Seth said with an excited smile, "It's pwetty ficey!" And Jonathan knowingly responded, "That's because it's hibernated." I put in, "Carbonated," which he repeated to Seth.

He commented later that, being so spicey, there must be a lot of "carbonate" in it, which I realized makes sense in a way --- the same way that something that is salted has salt in it. Take off the "ed" and you have the ingredient. Same with peppered, seasoned, buttered, battered, etc. Should work with carbonated too, right? I love the way a child experiments with the language.