Answer:
This is your stomach's way of letting you know you've neglected it.
What has been around for millions of years but is never more than a month old?
How many months of the year have 28 days?
What goes through towns and over hills but never moves?
What is between heaven and earth?
How did the farmer find his wife?
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?