Adjective. Used to describe persons who have adjusted or altered their lifestyle for environmental reasons. Crunchy persons tend to be politically strongly left-leaning and may be additionally but not exclusively categorized as vegetarians, vegans, eco-tarians, conservationists, environmentalists, neo-hippies, tree huggers, nature enthusiasts, etc.
Also used to describe establishments where alternative foods and products are sold, i.e. natural food stores.
Modified derivative of granola
"I need more crunchy guys in my life. I'm so tired of dating preppy metrosexual assholes."
"I'm heading out to the crunchy store to pick up some fair trade chocolate and tea tree oil, do you need anything?"