Answer:
What has teeth but no mouth?
I saw a strange creature. Long, hard, and straight, thrusting into a round, dark opening. Preparing to discharge its load of lives. Puffing and squealing noises accompanied it, then a final screech as it slowed and stopped.
I have a body but not a neck
What grows bigger the more you contract it?
A fashion statement whose name sounds like the upper part of a mobile war machine.
you hold my tail while I fish for you