“Back then, people were such libertines that they even dedicated a temple to Aphrodite Kallipygos.* Here’s why:
There once was a man from the country who had two beautiful daughters. One day, when they were feeling competitive with each other, they went out to the highway to see which of them had a nicer butt. When a young man passed by with his elderly father, they showed themselves to him, and after watching, he chose the older sister. He also fell in love with her and once he returned to the city, he became bedridden. Then, he told his younger brother what had happened and next thing you know, his brother went to the country as well and when he saw the girls, he fell in love with the other one. Well, their father pleaded with them to choose more respectable spouses, but since he could not convince them, he brought the girls from the country to them, where they convinced their father about them, and he married them to his sons. And so they were called ‘kallipygoi’ by the people of the city, as Cercidas of Megalopolis says in the Iambics:
‘There were a couple of nice butts among the Syracusan women.’
And since the sisters had gotten hold of some wealth, they dedicated a temple to Aphrodite, calling the goddess ‘Kallipygos,’ as Archelaus also mentions in his Iambics.”
*καλλίπυγος / kallipygos / callipyge (latin) : combination of kalli (nice) and pygē (butt). Somewhere, I heard Sufjan Stevens mention the word, and I wanted to track down the story.
οὕτω δ' ἐξήρτηντο τῶν ἡδυπαθειῶν οἱ τότε ὡς καὶ Καλλιπύγου Ἀφροδίτης ἱερὸν ἱδρύσασθαι ἀπὸ τοιαύτης αἰτίας. ἀνδρὶ ἀγροίκῳ ἐγένοντο δύο καλαὶ θυγατέρες· αὗται φιλονικήσασαί ποτε πρὸς ἑαυτὰς προελθοῦσαι ἐπὶ τὴν λεωφόρον διεκρίνοντο ποτέρα εἴη καλλιπυγοτέρα. καί ποτε παρίοντος νεανίσκου πατέρα πρεσβύτην ἔχοντος ἐπέδειξαν ἑαυτὰς καὶ τούτῳ· καὶ ὃς θεασάμενος ἔκρινε τὴν πρεσβυτέραν· ἧς καὶ εἰς ἔρωτα ἐμπεσὼν ἐλθὼν εἰς ἄστυ κλινήρης γίνεται καὶ διηγεῖται τὰ γεγενημένα τῷ ἀδελφῷ ἑαυτοῦ ὄντι νεωτέρῳ. ὃ δὲ καὶ αὐτὸς ἐλθὼν εἰς τοὺς ἀγροὺς καὶ θεασάμενος τὰς παῖδας ἐρᾷ καὶ αὐτὸς τῆς ἑτέρας. ὁ δ' οὖν πατὴρ ἐπεὶ παρακαλῶν αὐτοὺς ἐνδοξοτέρους λαβεῖν γάμους οὐκ ἔπειθεν, ἄγεται ἐκ τοῦ ἀγροῦ τὰς παῖδας αὐτοῖς, πείσας ἐκείνων τὸν πατέρα, καὶ ζεύγνυσι τοῖς υἱοῖς. αὗται οὖν ὑπὸ τῶν πολιτῶν καλλίπυγοι ἐκαλοῦντο, ὡς καὶ ὁ Μεγαλοπολίτης Κερκιδᾶς ἐν τοῖς Ἰάμβοις ἱστορεῖ λέγων·
ἦν καλλιπύγων ζεῦγος ἐν Συρακούσαις.
αὗται οὖν ἐπιλαβόμεναι οὐσίας λαμπρᾶς ἱδρύσαντο Ἀφροδίτης ἱερὸν καλέσασαι Καλλίπυγον τὴν θεόν, ὡς ἱστορεῖ καὶ Ἀρχέλαος ἐν τοῖς Ἰάμβοις.
Athenaeus, The Sophists’ Table (Deipnosophistae), 12.80 (p.223 Kaibel)