Injoke alert. My friend likes ducks and Gaudi's Hanging Models (an architectural exercise in physics, in which the guy hung a number of weights from strings, let them settle and used their shapes in reverse to form arches. Tension -> compression). The title is an Iain M Banks reference.
I told you: injokes. Also, a duck. Also, done totally in MS Paint, so you don't get to complain about any fail on the detail and shading.