ok, so for me, i will have a dream of something that has already happened in my life. Take a situation: a group of my friends hang out, smoke, and have a grand old time, then a dream will happen where I go through the same situation, only it's slightly different. Then it gets wierd, I forget what really happened and am convinced that the alternate situation happened, and all my friend think im fuckin nuts. Too much weed? Not a fucking chance.