Martin: What do you say we have dinosaur meat for dinner?
Me: Well, where would we get that?
Martin: At the grocery store.
Me: That will be pretty hard because they don't exist anymore.
Martin: WHAT?  What do you mean!
Me: There aren't any alive anymore.  They are extinct, which means that they are all dead.
Martin: ALL DEAD?
Me: Yes, they've been dead for a long time.
Martin: THERE ARE ZERO?  THERE ARE NONE?
Me: There aren't any.
Martin:  (now looking at me in disgust) Well, what else don't I know?