Answer:
I am always in front of you, but yet I am never here. What am I?
I've been argued on my color. Without me you'll die. So many attempts on your life use me so make sure you have many of my White friends.
What is the difference between a poorly dressed man on a bike, and a well-dressed man on a unicycle?
I am the kind of nut that is empty at the center and has no shell.
What goes into the water black and comes out red?
What sphinxes employ and players enjoy.