Showing All the Signs of Being Neanderthals

I see them most days now in the street, Neanderthal look-a-likes, Who only grunt when I give them a hearty good day, Bent double over their phone, Gripping it like a prize bone Bearing a sharp resemblance to prehistoric man, Who could not yet stand upright, Showing no signs of sociability or co-operation, Traits that sowed the seeds of doom, For that branch of Man-kinds family Tree.