Once when I was like 4, I had a dream where I was asleep in my room, and my brothers room was next to mine. But I was woke up by him, and being his richard troll ass self, he somehow got in my room without me noticing, picked me up out of bed, threw me in his room, and shut the door, it was dark in there, and there were two glowing green aliens looking at me. Then I woke up. It used to still terrify me, but meh, seemed more like an acid trip than a nightmare.