Answer:
I have a little pool with two layers of wall around it. One white and soft and the other dark and hard. What am I?
I am the ultimate killing machine used not once but TWICE I can be made by humans.
Digital white-out.
I have a name that's not mine and no one cares about me in their prime. People cry at my sight and lie by me all day and night.
What goes up and down but does not move?
What made Cyclops quit teaching?