Please! Dress at home!
At the coffee shop this morning I looked up to see a man "dressing" in the next room (there are 3 rooms in this establishment, all open to the others). He had unbuckled his belt, unzipped his pants and was tucking in his shirt (his back was to me). Then he reassembled everything into impeccable order, put on his necktie, attached two cell phones to his belt, and walked over to the counter to order his breakfast. If I find out I have my panty hose on backwards, I go to the rest room to tidy up; I don't correct the problem in public.