Remember?

I'm sure this has happened to all of us. You're cruisin' thru your day and all of a sudden something takes you back to your childhood. Or you experience dejavu and weren't even expecting it. Its cool and a little alarming at the same time. I wonder what the scientific explanation is for this occurrence? I'm sure some medical nerd has the answer:) Regardless, when this happens to me, I start to remember other occurrences that happened concurrently or other instances similar to that one that may have happened at another time. Memories are cool that way. Be sure to share them with someone!