Answer:
A sphere has three, a circle has two, and a point has zero. What is it?
What travels around the world without leaving the corner?
You do this into someone's ear when you want to be discreet.
If you can get this professional's attention you can get where you need to go for a price.
They come in many varieties: Red, Black, Dead, and Caspian to name a few.
I flow from the Homer’s mouth when he sees doughnuts.
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?