Very strange.

I just woke up from a dream. What was odd about it was that in the dream I met someone (call him A) and did something (irrelevant here) which gave me a sense of déjà vu, and then when I thought about it I realised that I hadn't really lived through the event before, but had dreamed it. I mentioned this to another of the characters in the first dream (if you follow me) who wasn't surprised - "Oh yeh, A's in the habit of visiting people in their dreams".

Then I woke up, fairly confused, given that A really has just visited me in a dream...