You've heard of sand castles. Well this instrument is used to make the sand cones for Chinese rockets used to defend the sand castles. And to make it even more interesting, you take crawfish and insert them into the device before packing it with wet sand, so when the little critter breaks free, you can scare you little sister. Mwaaahahahahaha
But really folks, I would think this a food tool, mabe a mold to help shape dough, or a batter around a hot dog, something like that. You could use it to make corn dogs, or pigs-in-the-blanket. Once the food was deep fried, you would just release the handles to release the food from the mold.
I could be way off base, but that's probably what I'd use it for, or maybe for an ice-cream scoop.
Seeeeeya; Goodweed of the North