...weighting the large femur bone of an unknown animal in his hand, the Moon Watcher shivered. Through his mind came the hurricane of images, out of which two were identifiable: the skull of aforementioned animal, laying by his feet, and the strange black slab of stone which filled his head with that unnerving high pitched sound. He started to get angry. He wanted to hurt the stone, but he couldn't remember where it was, so he unleashed his fury on the skull. Not realizing he still held the strong bone in his hand, he hit the skull, braking it into pieces. Surprised of the effect, he threw away the bone and covered his face.
Like old, sturdy mechanism starting, his brain sent strange impulses that combined a thought. A new idea came. Slowly he pick up the bone again. He tried hitting the pile of bone fragments, once, two times, three times... With every hit he surveyed the damage he induced, the joy filled him even more! No more shall his tribe be thirsty! No more shall the High Walkers chase them away from the pond!
...
After a few hours, he lead the strong ones of his tribe to the pond. They slowly followed him, fearing of the wrath of the Big MoFo, the biggest fighter of their rival tribe. Soon they've reached the cliff overhanging the pond, surveying the scene under them. The whole tribe of High Walkers was standing around the pond, some arguing and scuffling, some sitting and eating the meat of a large lizard, the sight of which induced saliva in Moon Watcher's warriors' mouths.
With an animal grin on his face, the Moon Watcher screamed the challenge to the Big MoFo, demanding that his tribe leaves the pond for good, or suffer unthinkable wrath. Big MoFo stood on the spot, not moving, apprehension not dawning on his face. Moon Watcher jumped to the spot a few meters from B.MF, laughing at the surprise the big fighter will experience when he sees the Bone, a new concept, the Weapon, in his hands.
Screaming his lungs off, Moon Watcher lifted his hands above his head, ready to hit and kill the unsuspecting enemy.
Taken aback, Big MoFo pulled out his Magnum .45, and blasted the huge hole in Moon Watcher's chest. The evolution was a harsh mistress.
"Bob, the apes are acting up again. I think it's time to pack up and leave." - dying Moon Watcher heard the noise Big Mofo produced, not knowing what it meant...