The people who serve you coffee have plenty to complain about. Crappy tips, customer attitude, being forced to listen to Feist covers on loop all day long -- the list could fill a whole book. And it did earlier this year, when Bitter Barista went to print. Just in case you're unfamiliar with both the original site and the new book, we compiled a quick round-up of the Bitter Barista's best gripes from over the years. Read, laugh, and make sure to leave a buck in the tip jar on your next coffee run. Especially if you ordered something stupid, cheapskate.