Answer:
I am what one cannot keep, two cannot hold, and three cannot destroy. What am I?
I am easy to waste and unstoppable. What am I?
What do you get when you mix lemons with gun powder?
I have a straight back and sharp teeth to cut objects.
I have skin, more eyes than one. I can be very nice when I am done. What am I?
I am your mother's brother's only brother in law. Who am I?