 I don't know the sound. Well, it should sound kind of hollow. You know, it's a deeper tone. Like when you thump my brain. You know, if you thump this table, there's a definite hard sound to that. But if you thump your glass when it's empty, it's going to sound different. Right. And this is, I'm talking about like in the grocery store at the farmer's market. Mm-hmm.