Answer:
I bind it and it walks. I loose it and it stops.
The weapon of choice to create the biggest shock.
I open wide and tight I shut, Sharp am I and paper-cut fingers too, so do take care, I'm good and bad, so best beware.
What can't you see, hear or feel, until its too late. What shadows love, and shopkeepers hate?
A mother had five boys Marco, Tucker, Webster and Thomas. Was the fifth boys name Frank, Evan or Alex?
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.