There's no definition of "ironic" that I can think of applying to that. It's like saying that "beautiful painting" is subjective and contextual, but "still life

There's no definition of "ironic" that I can think of applying to that. It's like saying that "beautiful painting" is subjective and contextual, but "still life painting" isn't. It just happens that pornography is almost[1] always considered NFSW, but again, I can't see how that is ironic. [1] Almost, because porn is SFW when your work involves porn.