Answer:
I can be simple or I can be complex. I can be found in this riddle or in everyday life. I can be shapes or even colors.
I am a king who's good at measuring stuff. What am I?
I'm not a bird, but I can fly through the sky. I'm not a river, but I'm full of water. What am I?
Send poorly behaved children to me and let them sit here. What am I?
As a state in the USA, I am round on both sides and high in the middle. What am I?
What never gets any wetter no matter how hard it rains?
What am I?
Animal
Difficult
Easy
Food
Funny
Kids
Logic