I think it's your mental attitude. So many of us start dreading age in high school and that's a waste of a lovely life. 'Oh... I'm 30, oh, I'm 40, oh, 50.' Make the most of it.
I've always had a bawdy sense of humor. My father was a traveling salesman and he would bring jokes home. He would say, "Honey, you can take this one to school, but you can't take that one to school."