Answer:
This guy crossed a road and everyone wants an explanation.
I am constantly overlooked by everyone but everyone has me. What am I?
I have a head and a tail but my eyes can never see my tail.
Only one color, but not one size. Stuck at the bottom, yet easily flies. Present in sun, but not in rain; doing no harm, and feeling no pain. What am I?
No legs have I to dance, no lungs have I to breathe. No life have I to live or die, and yet I do all three. What am I?
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.