Answer:
The part of the bird, that is not in the sky, Which can swim in the ocean and always stay dry. What is it?
It is something you will never see again.
Even if you throw it away, it still comes back.
Sometimes you feel it weigh a ton. Yet it is nothing, but somehow still there. Makes you uncomfortable around anyone, But speak its name and it's gone.
A standard dimension for sandwiches and rulers
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?