I remember a cartoon from the New Yorker. A railroad car. Three passengers with mobile phones held up to their ears. At one end of the car, a passenger is saying, "I'm getting on the train now." The middle one is saying, "I'm on the train now." The passenger at the other end is saying, "I'm getting off the train now."

That was a long time ago, when mobile phones were fairly new, but the cartoonist had it all figured out!