Augustine, De Civitate Dei 7.21
Now as to the rites of Liber, whom they have set over liquid seeds, and therefore not only over the liquors of fruits, among which wine holds, so to speak, the primacy, but also over the seeds of animals:— as to these rites, I am unwilling to undertake to show to what excess of turpitude they had reached, because that would entail a lengthened discourse, though I am not unwilling to do so as a demonstration of the proud stupidity of those who practice them. Varro says that certain rites of Liber were celebrated in Italy which were of such unrestrained wickedness that the shameful parts of the male were worshipped at crossroads in his honour. Nor was this abomination transacted in secret that some regard at least might be paid to modesty, but was openly and wantonly displayed. For during the festival of Liber this obscene member, placed on a little trolley, was first exhibited with great honour at the crossroads in the countryside, and then conveyed into the city itself. But in the town of Lavinium a whole month was devoted to Liber alone, during the days of which all the people gave themselves up to the must dissolute conversation, until that member had been carried through the forum and brought to rest in its own place; on which unseemly member it was necessary that the most honorable matron should place a wreath in the presence of all the people. Thus, forsooth, was the god Liber to be appeased in order for the growth of seeds. Thus was enchantment (fascinatio) to be driven away from fields, even by a matron’s being compelled to do in public what not even a harlot ought to be permitted to do in a theatre, if there were matrons among the spectators.