Answer:
You use it between your head and your toes, the more it works the thinner it grows. What is it?
What occurs four times in every week, twice in every month, only once in a year but never in a day?
Before Mount Everest was discovered, what was the highest mountain on Earth?
What instrument can you hear but never see?
This is meat from the upper part of a pig's leg salted and dried or smoked, often enjoyed in a sandwich.
When is it bad luck to see a black cat?