Answer:
You are my brother, but I am not your brother. Who am I?
I start new then become old. Start clean but be one dirty. I usually start big then become little.
I go around in circles, but always straight ahead. Never complain, no matter where I am led. What am I?
I am a kind of coat that can only be put on when wet.
A dragon's tooth in a mortal's hand, I kill, I maim, I divide the land.
How can you add eight 6s together so that the total adds up to 750?
What am I?
Animal
Difficult
Easy
Food
Funny
Kids
Logic