Riddle: Impale within, I cause pain,
Enter my gates and green is my foe.
Prick me and I shall drain,
All can see me, yet you do not show.
What am I?
Answer: The answer is skin, to impale, or to pierce with something pointed, would cause you pain. Enter the gates of your skin and you will bleed the color red, whos opposite color is green. Prick your skin and blood will drain. If you think as if you and your skin were separate, all you can see of yourself is skin, and everything else within you does not show.