David Cameron has faced a wealth of questions about his proposed online porn crackdown - including whether 50 Shades of Grey would fall foul of his new rules.
The Prime Minister admitted his planned system would mean a husband would have to admit to his wife if he wanted to view porn, because a filter would automatically be switched on.
And the decision to include both illegal child abuse images and legal pornography under the same "protecting children" banner sparked confusion, even among Cameron's MPs:
Tory Margot James announced on Twitter: "All households soon to be barred from online child abuse images and rape porn unless they actively opt in".
This illustrated a sense that the two issues were becoming worryingly conflated, with many commentators not distinguishing between the different thrusts of Cameron's speech.
Appearing on BBC Radio 2's Jeremy Vine show on Monday afternoon, Cameron sought to distinguish the two issues.
And Vine pressed him on whether 50 Shades, Canada's Beaver Magazine, or indeed his own speech would fall foul of a new trigger.
Cameron said they wouldn't, and added: "That's why it's very important to work with the companies involved."
Vine also asked Cameron if the "opt in" system meant a husband would have to "fess up" to his partner if he wanted to look at porn.
"If an adult wants to get rid of the filter on their computer, that's up to them," the Prime Minister replied.
"I'm not intruding on their conversation," he said, eventually adding: "Yes, it does."
Child protection is so important it is necessary to have the filters automatically switched on, he explained.