Homo Erectus (film)

Homo Erectus is a 2007 comedy film about cavemen that was written and directed by Adam Rifkin, and starring Giuseppe Andrews, Gary Busey, David Carradine, Ron Jeremy, Ali Larter, Hayes MacArthur, Adam Rifkin, and Talia Shire. It premiered at the 2007 Slamdance Film Festival in January 2007. It was released on DVD in America as National Lampoons Stoned Age.

After Fardart is betrothed to Thudnik, Ishbo begins to believe that he will never club a woman. He at first is too attached to her to consider clubbing another woman, and is further discouraged after a particularly illfated attempt at clubbing. Ishbo becomes quite depressed, a feeling which is escalated by his failure to prove useful on a mammoth hunt. He falls into a large pile of mammoth dung, then is eaten by the mammoth, and eventually excreted or extracted the scene itself appears as a series of animated cave drawings from the mammoth when it is finally killed by the rest of the tribesmen.During an attempt on Mookoos life, it is revealed that their rival tribe, the Binadraks, are planning on attacking them shortly. They train for battle but are bested by their enemies, who kill Mookoo and carry off Fardart, who disguised herself as a man to take part in the fight. Thudnik orders a retreat and they return to their home cave, which they decide to abandon in favour of finding a new home. Unable to convince the rest of the tribe to stay and fight, Ishbo decides to set out to avenge his father and rescue Fardart on his own. Thudnik declares him an enemy and swears to kill him if he sees him again. ........

Source: Wikipedia