Whenever I have to wait for something, I end up doodling. But when a sketchbook is not at hand, I doodle on any handy piece of paper. Which usually means that I stuff the paper into whichever bag I happen to be carrying and it sits there un-loved and unnoticed until I do a sort out.
This is one I found recently, sketched onto a basic piece of printer paper.
I was obviously quacking-up about something…
Quacking up