"No security guard can stop a refrigerator falling off a skyscraper."

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Whenever the horse stopped (which it did very often), he fell off in front; and, whenever it went on again (which it generally did rather suddenly), he fell off behind. Otherwise he kept on pretty well, except that he had a habit of now and then falling off sideways; and, as he generally did this on the side on which Alice was walking, she soon found that it was the best plan not to walk quite close to the horse.

— Lewis Carroll