Answer:
When you put this in a heavy wooden box the box will become lighter
Why can't Kevin, who is now living in Canada, not be buried in the USA?
What goes up the hill and down the hill, And spite of all, yet stand still?
What can you hold in your right hand but never in your left hand?
If you are running in a race and pass the second place person, what place are you in?
As round as an apple. As deep as a cup. All the king's horses can't pull it up.
Logic
Animal
Difficult
Easy
Food
Funny
Kids
What am I?