Fun Riddles

Question: What word links these images?

Question: A thief enters a shop and threatens the clerk, forcing him to open the safe. The clerk says, "The code for the safe is different every day, and if you hurt me you'll never get the code". But the thief manages to guess the code on his own.

How did he do it?

Question: At night they come without being fetched, and by day they are lost without being stolen.

What are they?

Question: What is bought by the yard by is worn by the foot?

Question: What is it that no man wants, but no man wants to lose?