Answer:
It is a popular afterlife destination where you want to send people when you're mad at them.
They come to witness the night without being called, a sailor's guide and a poet's tears. They are lost to the sight each day without the hand of a thief.
You have it even if there is none.
In the sun it likes to play; In the rain it goes away; Walk or run it always follows; In the mud it always wallows.
If you happen to wake up at dawn, you'll probably find this covering the lawn.
How did the farmer find his wife?