Answer:
What do you have when you're sitting down that you don't have when you're standing up?
Voiceless it cries,Voiceless it cries, Wingless flutters, Toothless bites, Mouthless mutters.
What do you throw out to use and take in when you're done?
Useful tool for who in darkness dwell. Within you, corrupting like a deadly spell.
I walked and walked and at last I got it. I didn't want it. So I stopped and looked for it. When I found it, I threw it away.
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?