More weird oral hygiene behavior.
As I was sitting stopped in traffic I could see the guy in front of me moving his hand really fast near his mouth. At first I thought he was brushing his teeth but then I figured I must be wrong. However I then saw the toothbrush. Personally this is not something I would do in the car. For one thing I require a sink to be near at hand also it seems like it might be distracting.
You hear stories about women putting on makeup while they drive. I put on my makeup before I even get dressed. Let me tell you putting my pants on while I'm driving now that is hard(Badump bump, thank you I'll be here all week).