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 bone has a sense of humor?
While you were folding a letter you got me. Usually you will do whatever it takes to avoid me but now you can't help but find me.
I am found on Mercury Venus Earth and Mars but not on Jupiter or Saturn. What am I?
I fly away as soon as you set me loose. People around you may slowly move away once they sense my presence.
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.