Why caviar is expensive

Someone just called me a sturgeon.

Why?

Because I act like one when someone's fishing for information.

Sturgeons will nibble at bait, and just when you think youve got them, theyre gone.

"You were with (LeGirl) this evening?"
"Sure. I stopped by her job, she asked me if I was doing ok, we chatted a bit, I left. I do that a lot."
"You never mentioned you see her that often."
"You never asked."
"Man, youre such a sturgeon."

Heh.