I found a story years ago on literotica, but have not been able to find it in years. It was a tentacle story, I believe titled Destroyed by Tentacles. Two girls are playing gamecube, Resident Evil specifically, and suddenly a tentacle monster attacks them, and they are brutally, graphically fucked by the monster, with some extremely graphic descriptions of cum from the eyes and other gore/filth details.
Source: reddit.com/r/eroticliterature/comments/zpfbc6/searching_for_a_story