What Am I Riddles

Question: Turn us on our backs and open up our stomachs You will be the wisest. What am I?

Question: I shoot people and sometimes cut off their heads. What am I?

Question: I have 3 eye colors yellow red and green when the red eye opens everybody freezes. What am I?

Question: What stays where it is when it goes off?

Question: I can't go left, I can't go right. I am forever stuck in a building over three stories high. What am I?