Actuarial Age
  
The estimated life span of a given insuree. Next time you go to a party and someone introduces herself as an insurance actuary, just realize that they're likely staring you up and down, checking you out, and then estimating that you, at 43 years old, have...what? 32.7...38.7...48.9 years left before you go?
They're the actuary. They're estimating the likely over/under best pricing of your life insurance policy. Yeah. It's how you feel somehow financially...naked.