false awakening

I woke up early this morning and went back to sleep. I thought I woke up again, and was just laying in bed. All of a sudden, a voice came out of nowhere (sounded like the voice of Barney Stinson, which makes sense because I was watching How I Met Your Mother before I went to bed last night) and said "You're dreaming." I was immediately overwhelmed by excitement and realized the voice was right. I sprung up and stood (or maybe floated) on the bed. I was in a dark room, with no furniture or anything on the walls. I was about to spin around, but the dream quickly destabilized and I woke up.