I was playing over the weekend with fast sketches in Painter. I just picked a couple of colours at random and went with whatever came out the end of my pen.
Sometimes my subconscious worries me a little...
... but mostly it just keeps me entertained.
I really like having an obvious story to my drawings, but keeping the story itself completely open to the viewer's interpretation.
On this piece in particular I did the red figure, the green sketchy side and the red sketchy side, but cheated in Photoshop with the green guy; he's really the red guy + Ctrl I and some fun with Free Transform.