I was just at the shops and bought 2 bottles of wine for a braai tonight. At the till the woman behind me smiles and says do you want trade your wine for my meat?

Outside i had my bike up on the pavement. I never use parking lots like a cager. As im putting the stuff on my bike a man comes up to me and says i really like your bike.
When we go for walks in the evening on my streets there are few people. When a jogger, dog walker or other stroller passes by they always look at you and say hello, goeienaand, or at least a smile and nod. Even a black man is more likely to say good evening baas or chief than to ignore you if i greet him.
At a traffic light when i pull up on the white line between lanes and look down into a car, women smile, some wave, most kids wave. In the aisles in the supermarket women smile and men nod if i look at them. That is normal to me.
If i looked like some kind of freak or white trash probably they would ignore me.
In london and europe in general i notice people avoid eye contact and if you look at them and smile or greet they look at you as if you are insane.
Americans are more apt to greet back.
If you are well presented, shaven, dressed neat, hair tidy etc what sort of reaction would you get where you are if you smile at someone or greet them?