Answer:
What falls down but is never injured?
What can be seen but not touched?
What goes through a door but never goes in and never comes out?
Bobby likes Jimmy but not Joe, apples but not pears, jeeps but not vans, shinny but not hockey, tennis but not squash. Who will he like, Sara or Sally?
A man goes out in heavy rain with nothing to protect him from it. His hair doesn't get wet. How does he do that?
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?