I often have very peculiar dreams. Whilst most of my dreams I'm at least somewhat aware that I'm not in reality, I'm not necessarily lucid.
I've only had one or two lucid dreams, and the first was an absolute trip. I feel as though I'll never quite come to grips with it.

I was riding on the top-deck of a public bus to my old high-school, The scenery outside the window was 2 dimensional, like it'd been papercrafted to fool a camera.
At this point I realised something was up, I must be in a dream. Before the bus had even stopped, I ran down the bus stairs, and exited an a military cargo aircraft on the front of my high-school.
For some reason, there was an orchestra performing in a set of stands, and the music rather than being audible, was written across the sky. There were other peculiarities, the bus/plane was nowhere to be seen, and the students walking in to the school were faceless.
The world was clearly manufactured.

It was at this point I felt myself waking up. I didn't want to let this opportunity go, think of all the perverted things I could do if I could control my dreams. I recalled reading somewhere that if you start to wake up in a lucid dream, you should start spinning around in place. I did just that.
However, in doing so, I tripped over my own feet, and began to fall over. The last thing a I saw was men in black suits, body guard looking men, running toward me. This is where the dream becomes strange.
I didn't necessarily hit the floor, as much as I fell through it. And I fell into nothingness. A freedom of any stimulus. It's hard to explain in words.
I had no sense of presence. No sense of time. There wasn't just nothing, there was no nothing. There wasn't just no colour, there was no blackness. There was no perception of the movement of time, and there was no absence of that perception. There was no thought, there was no thoughtlessness. No gravity, but no weightlessness. No spacial awareness. I was gone. I don't know where I went. Maybe if I had some... awareness, I might've felt lost, but, I didn't.

Again, I don't know how to put it, but I was "there" for what could've been both an eternity and an instant. Eventually, I woke up, obviously. But I don't think my sense of self or place has been tightly calibrated ever since.