I never want to be with anyone who can't tell me the difference between a crocodile and an alligator!
First, because it's inexcusably ignorant. A person should take an interest in the wider world and her surroundings, and crocodiles and alligators are among the oldest creatures on earth!
Second, because I myself never could keep it straight, all my life and I have been very blessed to find love with women who could tell me which was which. I think I deserve a woman of that caliber. I don't want to settle for less than that.