Castrating a lamb with your teeth is a pretty simple procedure, really. Grey Ruegamer knows. "You grab the forelegs and pin them to the ground, and then you grab the back legs and throw them on their back," Ruegamer said. And when the, uh, target area is exposed, "away you go. It's the way the Basques do it." Link. You can read a bit more about the practice (if you're interested in that kind of thing) here.