From The Old Testament Made Easy (Jeanne Steig), the following poem:
A Romance
Jacob fancied Cousin Rachel,
Uncle Laban’s comely child.
Seven years he toiled to earn her,
While her glances drove him wild.
When at last his bride was bedded,
Jacob drew the veil to kiss her.
Under it was Cousin Leah,
Rachel’s older, squint-eyed sister.
“Be not so distraught,” said Laban.
“Though at first she looks alarming,
Leah’s fun. I’ll throw in Rachel—
All for seven years of farming!
“Only seven more, dear nephew,
For the pair. You find that shocking?
Rachel will divert you nicely,
Leah darns a dandy stocking.
“Take the two. And take their handmaids—
This, I think, is rather lavish—
Saucy Bilhah, nubile Zilpah.
Both of them are yours to ravish!”
Leah bore him seven children,
Zilpah had a couple more.
Rachel and her handmaid, Bilhah,
Managed yet another four.
One of Leah’s was a daughter.
Sons made up the other dozen.
All twelve tribes of Israel sprang from
Jacob’s craving for his cousin.
(h/t Fosteronomo)