1. I am walking on a sidewalk, a very wide sidewalk in a non-descript big city. It is cloudy, it has rained. I chat with a friend as we walk nonchalantly and I notice that the sidewalk is littered with thousands and thousands of wriggling earthworms. We start to tread carefully so as not to step on them, we get closer to the storefronts. Near one of the windows there is a heated grill, similar to a space heater. The Earthworms that have wandered close to the grill are withered and all dried up. We keep walking carefully. A chicken, just like the one in the picture above, starts moving...dragging itself along the sidewalk. All of a sudden a stranger, a girl, steps on it and squishes it, muttering something about saving the animal. End.
2. I am cleaning the bathtub. I apply a cleaning solution and start scrubbing. I scrub and scrub and scrub some more. Yet the bathtub remains dirty. I keep scrubbing and scrubbing and cleaning and water starts to accumulate. The bathtub is still dirty. I scrub and scrub until all the paint, porcelain, and metal are gone, revealing some underlying fiberglass-like material. It starts to soak up all the water and begins to bulge. End.
I was going to ask Josef Von Teufel about these two, but he's a hopeless charlatan and a silly man, so I decided to ask the Wikipedia instead.
Rapid eye movement (REM) sleep is the stage of sleep characterized by rapid movements of the eyes. During this stage, the activity of the brain's neurons is quite similar to that during waking hours; for this reason, the phenomenon is often called paradoxical sleep. Most of the vividly recalled dreams occur during REM sleep. It is the lightest form of sleep, and people awakened during REM usually feel alert and refreshed.
The function of REM sleep is not well understood; several theories have been advanced.
According to one theory, certain memories are consolidated during REM sleep. Numerous studies have suggested that REM sleep is important for consolidation of procedural and spatial memories. (Slow-wave sleep, part of non-REM sleep, appears to be important for declarative memories.)
Any other suggestions are welcome...