Upcoming horror movie Backrooms is already diving into the internet phenomenon's origins as fans find links between the recent poster and the original 4chan post.
On March 30, A24 posted two new Backrooms posters featuring stars Chiwetel Ejiofor and Renate Reinsve, with the caption "If you're not careful." However, one eagle-eyed horror fan pointed out on Twitter that the caption is taken from the original post on 4chan, which reads, "If you're not careful and you noclip out of reality in the wrong areas, you'll end up in the backrooms. Check out the post below.
