My first deja vu I was 7. I remembered it very vividly because I really don't dream often at all, now or then, I just go to sleep and a "few seconds later" I'm up. In this dream, I was at a friend's house for the afternoon, we were having fun in her playroom when her baby brother came in, asking to play. She told him she was playing with me at the moment and maybe they'll play later. Her brother then started to play with a ball and kicked it around, then broke the ceiling lamp in the playroom. A few months later, it happened exactly the same, it "clicked" as soon as her baby brother came in to ask to play, and I remembered everything, our positions in the room, the color of the ball, the clothes we wore, the sound the broken lamp made... It was so surreal !

Lately, I have a lot of dreams/deja vus, and I like what I "see". It's true that it is a curiosity, as to why this happens. Maybe we can't understand on the moment ? Before said event happens I mean, but after having the dream. I stopped questionning a while ago.