A person that wears the generally far overpriced river/hiking shoes known as "Chacos". See chaco.
This company is known mainly for their water shoe/sandal hybrid. The people that wear these suffer from the smell of their feet/shoes after prolonged wear/use, which smells like rotten fish. However, they do not suffer nearly as much as the people around them. They also get retarded looking tan lines on their feet. Occasionally, sand/dirt/gravel gets into their shoes, making for an unpleasant and painful experience.
"Man, I need some money. Hey, maybe I should ask that Chacoian because he blew 100 bucks on a pair of glorified sandals."
Friend: "How do you know he's a Chacoian?"
"How can you NOT know? Can't you see those weird criss-cross stripes of white skin on his feet? And his SMELL...there's no question here; he's an authentic Chacoian."