Answer:
I am a box that holds keys without locks, yet they can unlock your soul.
Slayer of regrets, old and new, sought by many, found by few.
In many years, not much has happened. In many minutes, a lot has happened. In one second, everything has happened.
My teeth are sharp, my back is straight, to cut things up it is my fate.
Although my cow is dead, I still beat herΒ What a racket she makes.
What do angels sing in the shower?
Difficult
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?