Answer:
I am used when you jump off a bridge for fun.
I am rarely touched but often held. If you are smart you'll use me well. What am I?
I am always around you but often forgotten. I am pure and clean most of the time, but occasionally rotten. What am I?
Goes over all the hills and hollows, Bites hard, but never swallows.
I am a certain five-letter word and become shorter when you add two letters to me. What am I?
What made Cyclops quit teaching?