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A little boy returning home from school said to his mother, 'Mom, what's sex?'

His mother, who believed in all the most modern educational
theories, gave him a detailed explanation, covering all aspects of the
tricky subject.

When she had finished, the little lad produced an enrollment form
which he had brought home from school and said, 'Yes, but how am I
going to get all that into this one little square?'