My three seconds of lucidity!
I was having this really wierd dream about being on a beach with a whole lot of people, and there were lots of small islands off of its coast that had igloos on them (even though it was clearly a hot and sunny day). Anyways I entered this long hallway and realized in my head that I was really bored. Then I suddently realized that I was dreaming, although I didn't say it aloud for some reason. Then, I started running as fast as I could down the hallway and then I leapt as high as I could, hoping in my head that I could fly. Then I looked around and realized that I was accually flying in the hallway (Well, hovering/flying). Right when I realized this, everything started going black. So I tried to spin but I ended up spinning into the blackness and eventually woke up.
It was still longer than my previous lucid dream (one second) and awesome! :D