[Joykins]

Originally Posted by Elfwreck

It doesn't just mean "offensive by community standards"--it also means "lacks serious literary, artistic, political or scientific value." (A.k.a. "the SLAPS test.") A work can be horribly offensive to a lot of people and still have serious value in one or more of those categories.

Or as Tom Lehrer put it:

As the judge remarked the day that he
acquitted my Aunt Hortense,
"To be smut
It must be ut-
Terly without redeeming social importance."