Answer:
If you have me, you want to tell me. If you tell me, you don't have me.
It is something you will never see again.
A seasonal fashion statement named for the weather it's worn in.
There is a clerk at the butcher shop, he is five feet ten inches tall, and he wears size 13 sneakers. What does he weigh?
What is found over your head but under your hat?
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.