People who treat a received text message as a phone call, which has to be answered there and then, even if they are walking, (or even Driving
), at the time.
This results in them taking no notice of the world around them and causing all sorts of havoc. A text is meant to be less urgent messages, but, if you have to answer now, you could at least stop to answer it
Almost as bad are people on their Mobile Phone, (Cell Phone), who are so engrossed with the call they walk around in their own little bubble