What is the difference between girls/women aged: 

9, 19, 29, 39, 49, 59, 69, and 79 ?

At 9: You take her to bed and tell her a story 
 

 At 19: You tell her a story and take her to bed 

   

 
 At 29: You don’t need to tell her a story to take her to bed
   

  At 39: She tells you a story and takes you to bed 
  

At 49: She tells you a story to avoid going to bed     

At 59: You stay in bed to avoid her story

 At 69: If you take her to bed, that’ll be a story! 

 At 79: What story??? What bed???

         Who the hell are you???