1. Your paycheck is for saving and bills  
  2. Star athletes are younger than you  
  3. You’ve accepted your dead end career  
  4. You wear orthopedic, walking shoes  
  5. Your hangover always lasts two days.  
  6. You eat dinner earlier than you used to
I'll add one -- when all the professional athletes your age retired long ago... 
How about another -- you start a conversion with "Ya know, back when I was a kid...," followed by a complaint about 'kids these days'.  

Have another to add?  Leave it below