Answer:
What hangs in the sky by day but at night goes away?
Other terms for this handy device include doohicky, doo-dad, and whatchyamacallit.
You have it even if there is none.
This is a pearshaped fruit with a rough leathery skin, smooth oily edible flesh, and a large pit in the center. It is most used in guacamole dip
I travel the world and I am drunk constantly. Who am I?
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.