The OP touched one of mine right on the head, and thank you very much!
Another one involves being in an unusually comfortable room surrounded by large numbers of unusually attractive people where anything goes. I feel inadequate for not being more expressive: Not one has any clothing and all of them want their turns with everybody else. No inhibitions, just a lot of insatiable lust. It might be a wish for that "collective ecstacy" thing.
And while this is a place I'd like to be, I don't know if I'd go there: I don't seem to have the fortitude to do whatever I'd like anymore.