Answer:
I am black when you buy me, red when you use me. When I turn white, you know it's time to throw me away. What am I?
I go in dry and come out wet. The longer I stay in the stronger my surroundings get.
Goes over all the hills and hollows, Bites hard, but never swallows.
You throw away my outside, you cook my inside. Then you eat my outside and you throw away my inside. What am I?
What can you break even if you never touch it?
What made Cyclops quit teaching?