I do the chin nod a LOT. It's almost a social move for me. But I understand you, I try to project my voice deeper when I respond, but it comes out sounding really fake/ awkward if I do it wrong. I've been called lad once before, which is kind of fun. I usually like it pretty simple though, "hey man, he, his". I've never been called son, but that would be a nice once because there would be NO room for doubt, haha. I hope it happens for you, that would be a smirk bringer for sure.