What many Dolly Parton fans appreciate most are her quips. "I'm not offended by all the dumb blonde jokes because I know I'm not dumb . . . and I know I'm not blonde," she dishes to the Evening Standard. Dolly may be witty or hokey, depending on your point of view, but it's her husband's unique sense of humor that keeps her laughing, her website explains. 

Jokes, she explained to ET Canada, are the essence of their enduring marital bond: "We both have a warped sense of humor." Two people who share the ability to laugh can find a way past any problem, including times when things that cannot be unsaid are said, she noted. Luckily, her own marital arguments have never taken such an awful turn, as the country music legend recalled.

Dolly also believes the many ways she and Carl differ — work, interests, and lifestyles — also contribute to the longevity of her marriage. "I can't stay home 'cause I'm a gypsy. I love to go everywhere, do everything, meet everybody," she told the Evening Standard. Being apart most of the time, she and her hubby appreciate one another more when they do find the time to get together, she added. Though they are opposites, they still share many things they both love to do.