That&#x27;s not what he&#x27;s arguing. I don&#x27;t think anyone&#x27;s arguing that any penises have evolved some features that make them more lickable.<p>These are claims that non-procreative sexual behaviors have naturally evolved. A counter-argument to the idea that the only natural sexual use of the genitals is penis-in-vagina-sex. Claiming anal sex is unnatural because you can&#x27;t produce babies is the same as claiming that masturbation or oral sex are unnatural because they can&#x27;t produce babies. Seeking pleasure is NATURAL, evolved behavior. I don&#x27;t think you&#x27;re genuinely reading people&#x27;s claims carefully.