Okay, so that’s two RPG sessions in a row (different groups, different systems, no overlap) where the characters traveled down a tunnel of meat and encountered an enigmatic sphincter they had to travel through.
Unconscious metaphor for the unknowns of a new year, maybe? 🙂 (One group is approaching the end of an extended Scum and Villainy campaign; the other was a one-shot of Heart: The City Beneath.)