The UK Government itself is currently in the sweaty grip of one of this hysteria. With David Cameron’s controversial (and somewhat porous) ISP porn filters only recently installed, MPs are now turning their attention to the popularity of anal sex in online pornography. A recent consultation paper published by the Department for Culture, Media and Sport pondered restricting access as a way of reducing the numbers of people wanting to try the back bottom instead of the front one.

"More young people are engaging in anal intercourse than ever before," reads the paper, solemnly. “While the increase in anal sex cannot be attributed directly to pornography consumption, it does feature in a large percentage of mainstream pornography (for example, one content analysis found it featured in 56pc of sex scenes).”

The paper’s assumptions – as with all porn panics – appear to be entirely heterosexual, so much so that it doesn’t even bother to explicitly state them, even when talking about anal sex. Instead they just cite research which suggests that anal sex "is often not seen as a pleasurable activity for young women".