There is also a subset of coworkers that do not understand the (headphones == leave me alone) signal. They'll come up behind you and tap you on the shoulder or

There is also a subset of coworkers that do not understand the (headphones == leave me alone) signal. They'll come up behind you and tap you on the shoulder or, even worse, stand quietly just outside your visual focus until you break concentration and acknowledge them. Short of police tape across your cubicle door, nothing will send them the message. Does anyone else remember WKRP in Cincinnati? https://www.youtube.com/watch?v=SkP9DKnOgn0 https://www.youtube.com/watch?v=SkP9DKnOgn0