A granolawhore is typically highly pretentious, less than educated on their beliefs (they'll often say that humans can't actually digest meat, and similar nonsense) and is completely oblivious to the fact that the person they're talking to doesn't care about their opinion.
you: "Quiet, granolawhore."
Does this girl dress like a modern day hippie? Does this girl think cheese is murder? Does this girl get herself involved with all of the shit out there that doesn't involve her? Does this girl rub her soy product vagina on so many dicks that her radioactive vagina is probably the cause of global warming?
Well my friend, then you indeed have a granola whore.
GW's: WE WANT RIGHTS NOW! MAKE YOUR OWN DINNER! WE WANT RIGHTS!
L: it's those fucking granola whores!
K: didn't they win those rights like decades ago?