Answer:
What can one catch that is not thrown?
If two's company and three's a crowd what are four and five?
There's a one-story house in which everything is green. Green walls green windows green doors. What color are the stairs?
I always have to work with something in my eye.
I cannot be felt, seen or touched. Yet I can be found in everybody. My existence is always in debate, yet I have my own style of music. What am I?
I flow from the Homerβs mouth when he sees doughnuts.