Who's Aging?

So who's aging?  Me?  You don't look it, but could you possibly be eligible for a senior discount? 
I'm riding the bus, hanging on to the strap, minding my own business when a young man glances in my direction and jumps up to offer me his seat.  How nice, I think, people must be getting politer.  Politer and politer.  A young nephew offers me his arm on a snowy sidewalk.  A coworker reaches to take a box and ask where I want it--and it's not even all that heavy. 
Then a kid at McDonalds charges me for a senior coffee without even asking if I deserve it.  My first real senior moment.  I smile and say thank you.