I love love love doing contour drawings! Sometimes I do them verrrry sloooowly as I "feel" my way around an object, and sometimes I do them very quickly, moving from shape to shape getting all the information I can in a limited amount of time.
I knew I would be sitting on the bench in the playground across the street from the church for only a few minutes, so I did the drawing quickly - and got lost many times. I made a lot of mistakes and had to backtrack to "correct", and because I was using a pen, the corrections and mistakes are there alongside each other. If I had done it with pencil, I would have spent half my time erasing instead of drawing.
Contour drawing, by the way, is when you don't lift your pen off the paper - you just keep moving.
I'm in the mood to do some contour drawings of street scenes. The weather is great here today - strange for April. I do have a huge to-do list which includes getting groceries for our family Easter dinner. Let's see - go out drawing? Go to the grocery store?