Answer:
Pregnant every time you see her, yet she never will give birth.
Hold these between your knees if you want to set a Cuban beat.
I have it, I don’t share it. If I share it, I don’t have it. What is it?
Forward I’m heavy, but backwards I’m not.
If I have it, I don't share it. If I share it, I don't have it. What is it?
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?