The Carmina of Caius Valerius Catullus
We, maids and upright youths, are in Diana's care: upright youths and maids, we sing Diana.
Nay (may the Gods thus love me) have I thought there to be aught of choice whether I might smell thy mouth or thy buttocks, O Aemilius. Nothing could the one be cleaner, nothing the other more filthy; nay in truth thy backside is the cleaner and better - for it is toothless. Thy mouth hath teeth full half a yard in length, gums of a verity like to an old waggon-box, behind which its gape is such as hath the vulva of a she-mule cleft apart by the summer's heat, always a-staling. This object swives girls enow, and fancies himself a handsome fellow, and is not condemned to the mill as an ass? Whatso girl would touch thee, we think her capable of licking the breech of a leprous hangman.