The Water Bet

Question: Two men walk into a bar. One man has a baseball hat, the other a cowboy hat. The one with the baseball hat walks up the the bartender, and says, "If I can shoot water out of this tube to a cup on the other side of the room, you have to give me a thousand dollars. If I miss, I give you a thousand dollars." The bartender agrees. The baseball hat man puts down a cup and goes to the other side of the room. He shoots water out of the tube, but sprays it everywhere. The bartender is than laughing. However, the baseball hat man is also laughing. The bartender asks, "Why are you laughing?" Why was the baseball hat man laughing?

Question: Surrounded by life , yet life is its biggest enemy. But without life there is no need for it to exist. What is it?

Question: During what month do people sleep the least?

Question: When is 99 more than 100?

Question: People see through me, but none pass through without killing me. I can be anywhere, and can be seen double or single. What am I?

Question: The more you add, the less it weighs.