A Libertarian hipster, usually but not always wearing a Che Guevara shirt, who may or may not know who Che is, what socialism is, or anything at all--they just like the shirt. These people usually live in the San Francisco Bay area of California, but they also range up to Santa Cruz and have been found wandering abroad on their parents' dime.
Don't worry. It's just Bay Guevara, deciding what kind of croissant he's going to eat with his double rainbow mocha.