During the 19th/20th century “smut” referred to sexually explicit or pornographic content. This could include images, videos, literature, or other media that are considered lewd, obscene, or inappropriate for public consumption.
Vintage Smut Sunday – m/m foreplay (late 19th century)
I would love to suck some guys cocks in my home town but there doesn’t seem to be any interest. They all know I am a cocksucker but still no hits and I don’t solicite.