Two hunters were in a lodge, making small talk.  One of them
asked the other, "So, what do you hunt?"

He answered, "I hunt unicorns."

The first hunter was startled, but said, "Really?  How do
you do that?"

The other answered "I find a virgin and hire her to help me.
The virgin sits around in the woods until a unicorn comes to
her.  When it does, it sets off a snare."

The first hunter said "Boy, they must be hard to find.  I've
heard of them, but I've never seen one."

The second hunter said "Yeah, and there aren't many unicorns either.