I think it's a sociological thing. A buddy of mine is a kilted bartender at the Bullfrog Brewery here in town and someone made a wise crack when he slightly lifted his outer apron to dry his hands. My friend tried to explain about the inner and outer aprons and lifted the outer to show him there was no danger of reveal but the guy just turned away in disgust and yelled, "I don't need to see it!" before the apron was even up. He wouldn't even look at the bartender for the next few minutes just in case he saw something. most folks in America are poorly informed about the kilt and have no tolerance for any ideas other than what are already in thier heads. They may even see your junk pop out when it did not, imagining a peice of leg as the dreaded batch because they looked away before they actually saw anything and thier imagination did the rest. Some of it is cultural, some is homophobia (as if seeing your junk would make them gay), some is self repression gone too far. Whatever the reason I just roll my eyes and walk away. Better that than try to educate the unteachable.