The name "Big Butt" comes from the image of two goats butting heads that you see on the label. Bock means billy goat in German and Leinenkugel’s Big Butt Doppelbock’s name and label pokes fun at the goat’s springtime mating ritual. The result is a malty, rich, full-bodied bock beer brewed with two-and six-row pale and specialty malts and two specialty hops. 5.8% ABV.