In thru the Out Door

I am a card-carrying member of the Institute of Female Plumbing n' Stuff (Midvale is our brother school). Recently, hours and hours of wildly unscientific research have been undertaken on our current project to determine the validity of this highly, HIGHLY controversial topic, and I would like to pose it to you, our erudite audience. All ye of modest temperance, please refrain from reading further. Thank you.
Does there exist a correlation between male homo sapiens with a less-than-average penis size, and an unrelenting, persistent urge upon their female partners to perform anal sex? Indeed, our evidence seems to signify that the smaller the member, the louder and more plaintive the whining becomes. Is this just a fluke? A kink in the evolutionary chain? Or just a real pain in the ass?