I don't think its a hit on you thing to comment on the groceries, it may be a gender thing that they don't. Since I have kids I get similar comments to the diet coke thing when I'm shopping . You know 4 bags of chips, cookies, pdudding cups then salad stuff. I have had the whoa I don't think the salads gonna make up for all that junk food.... But yeah that bugs me.
I live near one of the busiest intersections in town, and to get home I have to wait through about 4 lights in the turn lane. Doesn't bother me a bit because I know its always like that.
The fools who get upset and freak out make me laugh because everybody knows its like that...
I always wave!