That happened to me once as well. I was visiting my buddy Gregory up in the nightmarish flatlands North of Indy, and as I passed a gas station walking back to his house, this guy asked me from his pickup truck (rednecky of course) if I knew where he could score some meth.

"Sorry dude, I'm from out of town."

He thanked me for my time and drove away. Very odd.

And I too had very long hair at the time, though I'm not sure how much that affected his choice.