It's certainly idiosyncratic, I might go so far as provocative or strange myself, but perhaps perplexing is a bit far, because it's not like what he meant was u

It's certainly idiosyncratic, I might go so far as provocative or strange myself, but perhaps perplexing is a bit far, because it's not like what he meant was unclear. (Unless one finds the question "buy why mean it that way?" to be perplexing)