I was remembering this morning that the old-fashioned "How do you do?" way of greeting someone new was sort of like the "How are you doing?" greeting, in that you echo back the same words (although I haven't heard "How do you do?" in so long, that I wasn't even sure about that anymore).
There is interesting discussion here on the topic of replying to question-type greetings with the same words. It turns out there are many such greetings..."what's up", "wassup", "howdy",
There is interesting discussion here on the topic of replying to question-type greetings with the same words. It turns out there are many such greetings..."what's up", "wassup", "howdy",