Good 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: Why was the mouse afraid of the water?

Question: People see through me, but none pass through without killing me. I can be anywhere, and can be seen double or single. What am I?