Fun Riddles

Question: what comes in hard comes out soft and you blow ???????????????????????????????????????/

Question: 4 people fall out of a boat and only 3 get their hair wet.

Question: A man entered a house. There was no one else in the house. He walked in to a room, stopped, and slowly raised his hands above his head. After a moment, he turned around, let out a laugh, and left. Why?

Question: I can't read the clock. What time is it, John?

Question: Decapitate me and all becomes equal. Then truncate me and I become second. Cut me front and back and I become two less than I started. What am I?