In this dream I had a few years ago, for some reason me and my family (mom, dad and sister) accompanied me to a mansion where I had lost something. The first room you saw when you entered the mansion was huge, having many cots on it, all of which contained porn stars going at it with each other, although they were under sheets and you couldn't see anything. We looked around for a few minutes (for whatever it was that we were looking for) and then left.
A few minutes later in the dream, we entered the mansion again, although this wasn't in real time; it was actually several months later. There were hardly any porn stars in that one room and it was quieter than with our previous visit. We looked around for a few minutes again, couldn't find whatever it was that I was looking for, and left again.
A few minutes/several months later followed as usual, which, once we entered this one last time, the main room was totally empty and quiet; no one was there. As we looked around some more, in the kitchen was a porn mag opened to an explicit picture and a XXX movie was running on a portable tv nearby.
(It seems to me that what happened was all the porn stars got A. I. D. S. and died. The porn mag and movie running represented that this cycle would still continue on indefinitely.)