Potatoes are gross, IMO. And I've learned that you're also supposed to ask the other person how they're doing. Wasn't even that long ago that I saw this (white) woman who I sort of know in the parking lot. I waved and smiled, and she asked how I was. I said good, and kept walking. "I'm fine BTW." And then she even told me wife about it. Like, fuck you lady. Why do we need four conversational touches? Two should be sufficient (and we had three)". Where I'm from, we just raise our eyebrows and don't break stride. I started doing it, though.