Answer:
What is up that’s also down? What’s a smile and a frown?
I open wide and tight I shut, Sharp am I and paper-cut fingers too, so do take care, I'm good and bad, so best beware.
Only one color, but not one size. Stuck at the bottom, yet easily flies. Present in sun, but not in rain. Doing no harm, and feeling no pain.
What has a spot and is very bright, is sometimes, red, white, blue, yellow or green and is often blinding.
It is able to speak because it has a hard gone. You know what it is as soon as it has sung. What is it?
Why is the letter B always cool?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?