Answer:
What is yours but only used by others?
idk
What can you fill a room with that takes up no space?
4 rubber ducks were floating in the bathtub, 2 floated away and 2 drowned. How many ducks are still alive?
A man goes upstairs to grab his time machine. He walks downstairs then goes back in time 200 years. Why did he go downstairs?
By Moon or by Sun, I shall be found. Yet I am undone, if there's no light around