Anyway, last week you had this real bad bout of maybe food poisoning. You were up half the night, two nights in a row—ok, all of both nights—puking your guts out until they were gone and then puking some more, just air and some stringy green stuff flecked with red. Plus you had this throbbing pain in your left arm. And so you called up your doctor, reluctantly, as he's always trying to limit your freedom. Doc says, "Dude, get thee to the emergency room," and so like here you are, four days later, in his office.