The chocolate drink in the new ad for Caribou Coffee looks mighty yummy. It's piled high with whipped cream and studded with chocolate shavings. In Caribou's "Get Real: Chocolate" ad, a pair of obnoxious marionettes sitting on a bench in a mall, wonder why they never get to drink anything as tasty as that Caribou mocha.Because we're not real," says the annoying male marionette to the annoying female marionette.