Good Riddles

Question: Anyone can dig a ditch, but it takes a real man to... finish the sentence.

Question: We have what we did not find; what we did find we left behind.

[What do we have?]

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?

Question: What did the blanket say to the bed?

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