Answer:
Men in skirts blow into these.
What occurs four times in every week, twice in every month, only once in a year but never in a day?
There is an ancient invention still used in some parts of the world today that allows people to see through walls. What is it?
Sometimes you feel it weigh a ton. Yet it is nothing, but somehow still there. Makes you uncomfortable around anyone, But speak its name and it's gone.
The buyer doesn’t want it, the producer doesn’t need it and the user doesn’t know their using it.
I am the fountain from which no one can drink. For many I am considered a necessary link. Like gold to all I am sought for, but my continued death brings wealth for all to want more.