Indeed - I haven't read that, but sounds promising!
Talking of medieval naughtiness, though, I have read Rabelais' Gargantua and Pantegruel, about a giant who got up to various unpleasant things. When he arrived in Paris, he pissed on the populace, drowning two hundred and sixty thousand, four hundred and eighteen of them (not including women and children).
In another episode, he discusses the softest thing to wipe your arse with, and decides it's a goose.
I saw Auberon Waugh being interviewed once, and he said that historians of the future wishing to learn about the early 21st century shouldn't look at modern artists and writers, but at the comic Viz instead. He used the example of the Viz cartoon of an arse-wiper called the "Clag-Gone" to illustrate this, and said it was an updated version of Rabelais' Gargantua wiping his arse on a goose.