Answer:
I shoot but never kills
What always goes to bed with its shoes on?
I tremble at each breath of air and yet can heaviest burdens bear.
To cross the water I'm the way. For water I'm above I touch it not and truth to say I neither swim nor move.
I don't live within a house nor do I live without. Most will use me when they come in and again when they go out.
This crisp stick-shaped roll is often enjoyed with soup or marinara sauce.