Answer:
What can't you see, hear or feel, until its too late. What shadows love, and shopkeepers hate?
Upon me you can tread, though softly under cover. And I will take you places, that you have yet to discover. I'm high, and I'm low, though flat in the middle. And though a joy to the children, adults think of me little.
Someone walked into a room and you heard a crash! Someone died. What happened?
What is it that has four legs, one head, and a foot?
What number has all letters in alphabetical order when spelled out?
You use it between your head and your toes, the more it works the thinner it grows.