 Okay Phil, it's almost Halloween. We've got a pumpkin. Tell us what you're about to do next. I'm going to do a little demonstration called the self-carving pumpkin. Self-carving pumpkin is a chemistry demonstration that should not be tried anywhere by anyone other than a trained professional ever. And you'll see why very shortly. Inside I'm going to put a little bit of this stuff. And it's perfectly safe. I want you to just kind of peer in and tell me what you see when I add the water. Ready? Oh, it's fizzing. It's bubbling. It's a little smoke? Yeah. That's really cool.