secure forgotten-password hint-phrases

has anyone seen a good list of hint-phrases that are both secure and easy to remember? Most websites let you choose your own hint-phrase to use in the "forgotten-password" dialogs, however I would like to implement a fixed set of hint-phrases to enforce a modicum of security. This prevents the user from choosing inherently insecure hints like "maiden name" or "the color of my red Z28". thx.

I don't remember where I saw the list, or the exact wording, but here are a few entries:

Name of the elementary school I attended.
Name of the street where I grew up.
Name of my first pet.
My second grade teacher's last name.
City in which my mother was born.
City in which my father was born.
Name of my first love.