Need help identifying a kitchen tool, with a wooden handle, and a cylindrical cutter I have no idea what this thing is, and it appears to be a kitchen tool, but for what?

I put up a YouTube video of it, and would love to see if anybody knows exactly what it would be used for, because we have no idea:

http://youtu.be/do5_D8Sjhk8

It would appear to be some kind of corer, or to cut shapes out of some fruit, but I can't find anything similar to it online.



The video linked to above does a better job of showing it from multiple angles.
It looks like one I bought a few years ago, it was suppose to cut corn off the cob. You put it around the small end of the corn and rotate in a downward motion. I didn't like the results and went back to using a knife.