Book 13 Chapter 7 of Tom Jones.
This is part of an ongoing project in which I will record and post one chapter per week of Henry Fielding's Tom Jones over the course of four years.
Well, the masquerade visit pays off for Tom, and in more ways than one. Tom meets with a masked lady, whom he assumes is Mrs. Fitzpatrick. The lady promises Tom that she will lead him to Sophia, if Tom does her one small favor. Tom is only too willing to oblige, and ends up returning to a house with the woman, only to unmask Lady Bellaston! Tom engages Lady Bellaston in a "conversation" that lasts for four hours. While nothing obscene is directly alluded to in the text, the included image (which I've censored here) will let the reader know what was clearly understood to the 18th Century reader of this book.