I also have had dreams in which something crazy happens, and then I "wake up" in the dream and tell a friend about my weird dream, only to wake up again for real and get confused about whether I've actually told the friend or not.

I've done something similar to that once. I had a dream that I was contemplating the possibility of there being more than one Satan, and then in a later dream that night, I told my sister pathvain_aelien about said dream and she told me there were TEN Satans.