Doodling ... scrawling ... scratching ... stippling ... automatic drawing ... gesture drawing ... and musing on paper with whatever pen or pencil or marker is handy.
What a great warm-up to the big piece you're working on ... or a good way to pass the time while you're watching Bridezillas ... or renewing your driver's license!
You take your sketchbook with you wherever you go, right?
"Girl With Buck Teeth"
"Girl Smoking a Coffin Nail"
"Girl With A Long Tongue"
"Girl Smoking Some Borkum Riff Special Mixture No. 8"
"Girl Who May Be An Outer Space Alien"
"Girl Who Just Caught a Fish With Her Teeth"