Answer:
My teeth are sharp, my back is straight, to cut things up it is my fate.
What has a single eye but cannot see?
We are all around, yet to us you are half blind. Sunlight makes us invisible, and difficult to find.
We are five little objects of an everyday sort. You will find us all in a tennis court.
What goes in the water red, and comes out black?
I am your mother's brother's only brother in law. Who am I?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?