For a good time, give me a call . . .
Homo sapiens strives to kill off competent hominids.
So Cro-Magnon and Neanderthal fuck homo sapiens, that gets him with a radioactive stone hanging in front of their balls which (with “special radioactive” poison) leaves homo sapiens with a self-defeat gene to engage when things get real tough.
Moral of the story. Better choose your bed partners!