In fact the fellator as well as the cunnilingue may be called eaters of filth, as in the passage of Galen quoted previously, where both of them are called coprophagi (dung-eaters). Bæticus however has only to do with the female pit; he is a cunnilingue, not a fellator. On the contrary, the lewd tongue of Tongilion (III., 84) is that of a fellator, not of a cunnilingue; for the tongue of a cunnilingue plays the part of a lover, being active; while that of a fellator acts the part of a prostitute, remaining passive. Sometimes for want of attention the most learned commentators are at fault in elucidating these playful passages. One of the twin brothers, who in our friend of Bilbilis (the poet Martial) (III., 88), are licking different groins, was a cunnilingue. The neighbor of Priapus, “by whose fault it is unhappy Landacé swears she can hardly walk, she is so enlarged,” is covertly designated as a cunnilingue (Priapeia LXXVIII.); yet for all that Scioppius maintains he was only a fornicator; but why should we turn away from the proper sense of the word on account of the enlarged aperture? As if the vulva could not be enlarged, or relaxed by the tongue of the cunnilingue equally as much as by active co-habitation!  (Manual of Classical Erotology (De figuris Veneris). Autor : Friedrich Karl Forberg)