A distraught senior citizen phoned her doctor’s office.
     “Is it true,” she wanted to know,  “that the medication
     you prescribed has to be taken  for the rest of my life?”

 “‘Yes, I’m afraid so,”‘ the doctor told her.

 There was a moment of silence before the senior lady replied, 
“I’m wondering, then, just how serious is my condition because this prescription is marked

     ‘NO REFILLS’.”