Good Riddles

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

Question: A man travels by wagon,
brings joy each evening,
but depression by the morning.

Who is he?

Question: How many tickles do you need to make an octopus laugh?

Question: What is that thing we buy for eating but cannot eat it?

Question: There is a thing that if you put in water and get out, put it back for about 2 minutes, you won't see it again. What is it?