I'm climbing in the rock gym. At the top of the wall is a four-inch pipe crossing the ceiling, and I grab on to it, finding it a good handhold. Then I realize that I have no rope or protection, and I am a long way from the ground, so I decide to descend.

I seem to know that I am dreaming, so I make some temptingly impossible moves on the way down, leaping for small holds and enjoying my imaginary skills.