I really hate it when it takes a few text messages to articulate a thought, but my friend responds to the first message without context of the next two messages which would completely change the response, but they clearly have put their phone down somewhere because they must be doing something because now that the thought does need a timely reply because it's in regard to a change of plans which would be better started earlier than later..... they're now not reading their messages and you've trapped yourself in waiting mode hell.
