Shwmae, at first reminded me of that thing that we found in every Lesson 1 of English language:
Person A “How do you do?”
Person B “How do you do(?)”
It always seemed really weird to me (us). It’s a question, but not really, since the other person is supposed to repeat exactly the same thing instead of answering!? I never really understood the point, but I actually never heard anyone saying that in real life so…never mind!!
p.s. I see/hear shwmae all the time, instead, and just say shwmae back every time, it seemed always fine!