Comment by beebeepka

It's been a few years since I had to deal with a coworker who likes to draw random stuff on a board or a piece of paper, insisting that it is essential for everyone to watch. I never do, as I have learned that guys like this consistently provide the worst explanations because they tend to focus on their drawings, which they like.

I realise this isn't what you said, of course. Maybe you don't do this.