If two people are proximal, engaging each other's eyes and speaking alternately, are they having a conversation? I've been pondering this since dinner a few nights ago, when the following exchange took place:
Lars (in sickly groaning voice): My stomach, you know, here (indicates left armpit) hurts, so I can't cut my noodles.
Ross: My report card came home today.
Lars (normal voice): My teacher is MORE than 18. She's past the teens, she's a TEACHER.
Mouths full, they gazed at each other, nodding slightly in that way you do when conversations at meals pause for chewing. Both seemed satisfied and neither was grumpy the way they get when "nobody is listening to my important speaking," and I was left to wonder if I'd tippled more of the wine for the sauce than I'd thought.