TAKING A WOMAN TO BED!

What is the difference between girls/woman aged: 8, 18, 28, 38, 48, 58. 68, and 78?

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 the hell are you???