I'm no amateur at this, I know that some people are into having their goodies ground into paste, I'm hip. But this thing literally looks exactly like the nutcracker my parents had when I was a kid, except in surgical steel and with less heart.
If you're not sure how this thing works just by looking at it, you could go to the site and see a demonstration, but will that really make you feel better? How could it be used in any way that isn't awful?
Fun Website Quote: Unscrew the bottom ring on the flask using the included Allen wrenches, and insert testicles.