Romney is a small toad
This according to Kim Clausing of Reed College, discussing signaling theory.
However, there are some hints that come from both the economic theory of signaling and the behavior of toads in the animal kingdom. If Romney is a rational strategist, surely he would release the returns unless he thought there was something in there that was genuinely worse than what we are already assuming. In the case of animal behavior, that would make Romney an awfully small toad.
via Start Making Sense.