Another BS jumping off point! And I beat Tweed to it!

It is easy to demonstrate that dreams often have the character of blatant wish-fullfillments; so much so that one wonders why the language of dreams was not understood long ago. For instance, there is a dream that I can experience at will, experimentally, as it were. When I eat sardines, olives, or other strongly salted foods in the evening, I am awakened in the night by thirst. But the awaking is always preceded by a dream with the same content: I gulp the water down; and it tastes delicious to me as only a cool drink can when one is dying of thirst; and then I wake up and really have to drink. The cause of this simple dream is the thirst which I feel when I awaken. This feeling causes the desire to drink, and the dream shows me this desire fulfilled. It thereby serves a function which I can easily guess. I am a good sleeper, unaccustomed to being awakened by any need. If I can slake my thirst by dreaming that I am drinking, I don't need to wake up in order to be satisfied. Thus this is a convenience dream. The dream is substituted for action, as so often in life. (from this page)