I did that once after a slopfest of a ride at 6 mile with the added benefit of it being so muddy that my wheel slipped off a log ride (not sure why I tried, figured it couldn't get worse...wrong) and I hit it chin first and bashed it open. I walked into wawa with blood all over my face covered in what had to be like 5 pounds of mud with the only clean spot on my body being my eyes which were covered with mud crusted shades. At the same time a roadie type rolled in with his lycra and team jersey and gave me the dirtiest scoffy look I've ever received from another biker. I just grinned back and waved, he didn't wave back ;p I should have asked him if he wanted to form a paceline for the ride home.
Riding on the road is awesome fun, I just don't take the common cyclist too seriously when they get thick headed about gear/activities (tires, jerseys, shaving legs etcs).