Answer:
There is one in every corner and two in every room.
What goes up but never goes down?
What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?
You do this into someone's ear when you want to be discreet.
I'm the start of eternity and the end of space. There are two of me in heaven and one in hell.
Cycle Cycle Cycle.