You know that the dialog in the picture is...
Kid: "Pffftt... Bullshit you and grandpa killed all those mammoths with fire-hardened wood spears. Everyone knows you can't take a mammoth down without an obsidian spear point."
Dad: "Kids today and your tying one thing to another thing with rawhide! What happens when the stone and wood spirits fight and make your spearhead fall off? It just ain't natural!"
