Answer:
I am quick when Iβm thin. I am slow when Iβm fat. Wind is my worst nightmare.
I flow from the Homerβs mouth when he sees doughnuts.
I'm not really more than holes tied to more holes; I'm strong as good steel, though not as stiff as a pole.
I can run but not walk. Wherever I go, thought follows close behind. What am I?
I break down buildings, I crumble mountains but you can't see me. What am I?
Though not a plant, has leaves. Though not a beast, has spine. Though many wouldn't need this thing, It's more valuable than wine.