A week or so ago I was “half-lucid dreaming” (aware I was dreaming but not nearly as conscious as daytime self, and still somewhat “on rails”). I decided to try and turn it into a sex dream, walked up to a door and went “ok, when I go through this door, on the other side there will be attractive people to have sex with”, and then upon going through it was a large space (IIRC like a high school gymnasium) that was dark, cold, and completely empty. There were even cobwebs hanging from the ceiling. It was cartoonish in its lack of subtlety.