Children as young as four can understand irony. Why Male Spiders Prefer Virgins. Pfffft.
This is nothing compared to the anglerfish. (it takes about half way through to get crazy) "At birth, male ceratioids are already equipped with extremely well developed olfactory organs that detect scents in the water. The male ceratoid lives solely to find and mate with a female. Cordyceps Fungus. Giant centipede eating mouse.