Heh, funny question.
My lovely wife is...well, stacked is a good word for it, even at the advanced age of... um, better not give that away. She's under 50 and over 40, and you'll just have to be satisfied with that, and she still looks fabulous to me. For a while I called her titto, early in our relationship, but in later life I've reverted to the old standards: honey, dear, babe, just routine stuff. But now and then, when she's teasing me unmercifully (which she's very good at) I'll take an idea from Peter Sellers in one of the Pink Panther movies and call her "swine wife." Purely a term of affection, of course.
But that's not common. No more than once a week...