Funny Riddles

Question: Why would a hair stylist rather cut the hair of two brunettes than one red head?

Question: The shorter I am, the bigger I am.

What am I?

Question: What two letters can spell the word candy?

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: Draw, fire, or fill me;
I'm still empty.

What am I?