No, this is not some newfangled, Aussie-inspired, Marlin-born culinary calamity. Have no fear, smoked kangaroo is not a featured menu item. “Boomerang,” in this instance, is meant to indicate that you’ll be so satisfied you’ll come back. Turns out there’s truth in advertising. Whup’s is tidy and small, but there is no indoor seating, so enjoy the mesquite-and-post-oak-smoked offerings at one of the three tables under the awning out front, or get it to go.