Answer:
There are several different kinds, but the one you pick doesn't do its job. What is it?
I am mother and father, but never birth or nurse. I'm rarely still, but I never wander.
Men have one, women two, and when they become family, it’s three. What is it?
What has a mouth but can't chew?
You should keep it as straight as can be, yet very few do. Most of the time it's slightly bent or curved. Your sadness usually causes it to bend further, but don’t bend it for too long or it may never be able to fully straighten out again. What is it?
When is it bad luck to see a black cat?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?