Answer:
Sitting down you have it, Standing up you don't.
You can have it, and be at it, But it never lasts forever.
Low on cash? Pick out items from this rack.
How many bricks does it take to complete a building made of brick?
There is one in every corner and two in every room.
you hold my tail while I fish for you
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?