Answer:
I am the ultimate killing machine used not once but TWICE I can be made by humans.
What do you call a sleeping bull?
From house to house I go, sometimes narrow, sometimes wide. Whether there's rain or snow, I always stay outside. What am I?
I grow up while growing down
The more of me you take, the more I appear behind you. What am I?
I flow from the Homer’s mouth when he sees doughnuts.
What am I?
Animal
Difficult
Easy
Food
Funny
Kids
Logic