Just the other night I had one. I dreamt that I was sat at my PC, a portal opened up and out came the Mane 6. At first we were shocked and scared of each other, but after a while a was brushing their manes and teaching them about human life.
After explaining what a cartoon was to them, AJ seemed really peed off that we watch their lives on TV. I had to get up after that, nice dream though.