Answer:
Tickle with your fingers and a song it will sing. Be careful, though, you may break a string. What is it?
What has been around for millions of years but is never more than a month old?
Angels and pilots earn these.
What is so delicate that saying its name breaks it?
They can be long or short; they can be grown or bought; they can be painted or left bare; they can be round or square.
It is something you will never see again.
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?