Other than the known insult, the term OLD HEN is used in latin american cultures to express the quality of a good looking older woman, which even brings up a popular saying:
"Old hen makes a better chicken soup"
-Man, this MILF has been hitting on me all night long, what am i supposed to do? by her age, she could even be my mom!
-Chill out dude, she looks better than that alien you used to call your girlfriend, anyway, "OLD HEN MAKES A BETTER CHICKEN SOUP"