tin-can

He began to prefer talking on the phone to actually getting together with someone, preferred the bodilessness of it, and started to turn down social engagements. He didn't want to actually sit across from someone in a restaurant, look at their face, and eat food. He wanted to turn away, not deal with the face, have the waitress bring them two tin cans and some string so they could just converse, in a faceless dialogue.