That just happened to me today. I had just began listening to "I Am the Walrus" about to spiritually trip out, and my father walks in the door and angrilly informs me to "get off the computer, now." and I had a feeling before I even got on that it was going to happen, lol. It could just be the mary jane floating around in my system from yesterday, because that kind of stuff happens to me all the time when I smoke enough weed. There's at least three times where I swore that whatever was happening to me at the time had already happened in the past, although it couldn't have really happened. As if I dreamed I was sitting on a certain person's couch with some other people and he was sitting on the same chair and said something completely original that couldn't be said in any other context about some far out topic that is virtually never discussed, but I know I've already lived it, you know. It's a little bit creepy, to tell you the truth.