Well this explains Politics

Poo-flinging identified as a sign of intelligence in Chimps

In a study published in the latest issue of Philosophical Transactions of the Royal Society B, psychobiologist Bill Hopkins and his colleagues report that poo-flinging (and any-other-object-flinging) is, in fact, a sign of high-order brain development. The researchers report that chimps who threw more and with greater accuracy had more developed motor cortices and significantly better communication abilities than inaccurate, non-flingers.

Link.