When I was 6 I dreamt that we got the day off because the teacher was sick. I woke up and thought, Oh shit, now I have to go to school anyways. So my mom brought me and my brother to school only to find out that the teacher was sick and we had the day off. Yippie!
She was only sick twice in my entire school carreer.
The one dream I mentioned earlier was after a nice shroom trip. I dreamt that I was in love with a girl and that I was sitting with her in a cafe. The feelings were so strong that I woke up and had plenty of time to think about and remember the dream, as it was 3 am and didn't have anything to do. I didn't recognize her in my dreams, but remembered the clothes she had on. Three months later I was sitting with my new girlfriend in said cafe and had a click: she had on the same clothes and was talking about the same things. The music was the same as well. In my dream I started to say: Hey, I've dreamt about this, and in reality three months later I couldn't stop my mouth from saying the exact same thing.
Was this a prediction? No. I didn't make judgements and I didn't know it was going to happen, but I had a feeling in both instances (there were more) that they were real. Usually my dreams are much weirder than these simple scenes and they contain elements that are outside the realm of reality, like giant tidal waves, huge snakes, messed up gravity, and so on. Was it a presentiment? Maybe.