Answer:
A girl was ten on her last birthday, and will be twelve on her next birthday. How is this possible?
Only two backbones and thousands of ribs.
I am round as a bowl, deep as a tub, but all the world's water couldn't fill me up.
Long legs, crooked thighs, little head, and no eyes.
Once they sailed the sea, now they surf the web
Break me and I am better immediately set and harder to be broken again.
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?