Uncle was young, too?

This was news to me. I had never pictured Uncle Percy as a bird who had gone about with rackety sets as a young man. In fact, I had never pictured him as ever having been a young man at all. It's always that way. If an old buster has a bristling moustache, a solid, lucrative business and the manners of a bear when aroused when hibernating, you do not probe into his past and ask yourself whether he, too, in his day may not have been one of the boys.

(from Jeeves in the Morning, by Sir Pelham Wodehouse)