Ever have a Deja-vu feeling?

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I enjoy Deja-vu feeling. It has happened with me few times. The last one I remember was while I was walking to a park holding a coffee in one hand and a newspaper in other. Suddenly a man walked past me and said something like: Tomorrow we are going to sauna, take your camera but I will get drinks. Later I realized he was speaking on earphones with someone else, but the text sounded like I have heard it before, it was so touchy to me, it felt like I go back in past with enormous speed and then get back in present walking with my coffee... It's fun, and I like when you can remember this process. I am not sure how to explain this feeling.