I am absolutely, positively, definitively certain, that when people post their ages on these on-line sites they are calculating in dog years. 

It is baffling to me to think that any participants in this activity sincerely think that you won't notice, upon meeting them, that the age stated and the accompanying picture are decades off.

Which, silly me, is easily explained away, by the dog years calculation. 

"My god," he exclaimed, "I woke up this morning and apparently, overnight, grew a chin wattle, a pot belly and, insult to injury, I shrank.".  

The shrinking part I can relate to. Indeed, each time I go for a bone scan, upon receiving the results, I am convinced that it won't be long before my feet won't reach the ground when I am seated. I would, however, be sure to include a snapshot of that in conjunction with my other photos. 

But maybe he's a really nice guy. 

Maybe, you can have deep and lengthy conversations learning about living through the Depression, being on the beach in Normandy, or making the transition from ice boxes to refrigerators. 

A history lesson. You could do worse.