Answer:
You throw me out when you want to use me and you take me in when you don't want to use me. Who am I?
Goes over all the hills and hollows. Bites hard, but never swallows.
An open ended barrel, it is shaped like a hive. It is filled with the flesh, and the flesh is alive.
If you drop me I'm sure to crack. But give me a smile and I'll always smile back.
There are several different kinds, but the one you pick doesn't do its job. What is it?
If lightning strikes an orchestra who is the one most likely to get hit?