Three guys are in a Cessna.
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The first drops a penny out the window.
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The second drops a pencil and the third a bomb.
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When the plane lands, the first guy goes to see where the penny landed.
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He sees a guy swearing and trying to get a penny out of his forehead.
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The second sees a girl holding her dog who has a pencil through his head.
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The third guy sees a guy laughing his head off.
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He asks: "Why are you laughing?"
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The guy says: "I was cooking on my BBQ when I farted..."
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"What's so funny about that?"
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"It blew my neighbor's house apart!"
