The difference between girls aged: 8, 18, 28, etc. At 8 -- You take her to bed and tell her a story. At 18 -- You tell her a story and take her to bed. At 28 -- No story is necessary to take her to bed. At 38 -- She tells you a story and takes you to bed. At 48 -- She tells you a story to avoid going to bed. At 58 -- You stay in bed to avoid her story. At 68 -- If you take her to bed, that'll be a story! At 78 -- What story??? What bed??? Who are you???