What's the difference between women at the ages of 8, 18, 28, 38, 48 & 58 Years ?

8 Years - You take her to bed and tell her a story.

18 Years - You tell her a story and take her to bed.

28 Years - You don't need to tell her any story and take her to bed.

38 Years - She tells you a story and takes you to bed.

48 Years - You tell her a story to avoid going to bed.

58 Years - You stay in bed all day to avoid her story.