G-50 say (6,3)
I believe the answer is:
middle age
But I can't explain it at all! Could you help me understand?
(Other definitions for middle age that I've seen before include "Time of spreading waistlines?" , "Time of life c forty five to sixty" , "central period" , "Years from 40 to 60, bringing unwanted spread?" , "after which teeth fall out?" .)