>>17195
>while not as “classy,” posters for old horror and/or exploitation films might also capture that same vibe. you can genuinely buy compilation books of those sorts of posters on amazon, kek.
https://www.terribleposters.com/
This site I stubled across has some posters like that.

If you still want deniability but can't find anything classy you want, a lot of more niche metal outfits have guro posters, mainly grindcore type stuff. So you won't be able to pass it of as high art, but you might be able to have some excuse if you like metal or can at least fake it enough.