A new pet was all the rage among people. A mottled brown, snakelike insect that's very long and floats in an aquarium tank like a mosquito larva. The creature would remain still and silent for long periods in the tank. Should anyone jostle the tank or start up a noisy water filter then the tank would be full of squirming, frightening tube monsters. Whenever one would lift its head above the surface of the water, it would look surprisingly like one of H.R. Giger's aliens. More precisely, a queen alien as the head flared out rather than remaining smooth and long like a regular alien.
My situation had a tank full of these creatures flailing in a tank because someone turned on the bubble aerator. This one creature kept flipping out of the tank and squirming near the radiator against the wall. When I grabbed it, six jointed legs clamped around my fist while the head and tail would flail crazily in my grasp. I could only hold the beast when I wasn't looking at its struggle. Several of the creatures in the tank were fascinated by the sight and started spitting water at me. I figure they were trying to get me to release their tankmate.
Later in the dream I was driving through the mountains at night. There was a fork in the road and I took the wrong turn. The road became a railroad track with brick walls on either side. I couldn't back up for fear of being caught by a train. The first safe point I reached was a run-down refreshment stand near the top of Pikes Peak. Lots of people were milling around, eating crappy and overpriced food in the institutional blue dining area. All of them were waiting for the next cog train to take them back down to Colorado Springs.

There isn't any more to the dream. Just random nonsense that's stuck with me for most of my day.