Answer:
Six letters do my name compound; among the aged oft I'm found; The shepherd also by the brook hears me when Leaning on his crook; but in the middle me divide and take the half on either side each backward read a liquor tell ev'ry gay toper knows it well.
What do you get when you cross a pig with a karate expert?
Tear me off and scratch my head what once red is now black.
I am all around, yet to me you are half blind. Sunlight makes me invisible and difficult to find. What am I?
Brown I am and much admired; many horses have I tried; tire a horse and worry a man; tell me this riddle if you can.
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.