Fear is a strong motivator. With great power, comes great responsibility. Try to use a courteous approach, first. Impressionables may be afoot.
I don't get the spitting thing, either. I guess it's just to piss-off their parents. About seven or eight years ago, I was waiting in a mall parking lot and noticed three teenagers walking by. Two guys and a chick. One guy spits, and I think, wow, how uncouth. Right in front of the girl. Then, the other guy spits. I'm going, WTH? No respect, manners or regard for the gal. Then, the girl heaves a loogy. Right on the sidewalk. It made me laugh, at myself, for thinking I was so in tune with the World.
