The telephone is a trap from which one can never politely extricate oneself without a phantom package delivery or imaginary house fire. It’s not good manners to blurt “Look, man, I’m done talking” without the person on the other end either continuing to chatter on uninterrupted, thrilled to have someone to throw words at, or threatening to never speak to you again and slamming the phone down in your ear. Which would be fine, because then you’d be relieved of the chore of having to talk to them on the phone.
