Last year The Australian published an excerpt from Mary Roach’s excellent book Bonk.
“For centuries physicians put stock in an anatomical event called upsuck. They believed that a woman who had an orgasm during sex had a higher chance of conception because the contractions sucked the semen through the cervix and on up into the uterus. (“I am of the opinion that the vulva of Your Most Sacred Majesty should be titillated for some length of time before intercourse,” counselled the physician of the then childless Hapsburg empress Maria Theresa.)
The 19th-century gynaecologist Joseph Beck claimed to have witnessed upsuck in action, via a patient with a prolapsed uterus (meaning her cervix was parked in plain view inside the opening of her vagina). “At the height of excitement,” he wrote, the cervix made “five or six successive gasps, as it were“. (This was a woman of such “passionate nature” that simply stroking her cervix three times, Beck claimed, would bring on an orgasm. My gynaecologist didn’t buy it; she pointed out that the cervix has so few nerve endings that biopsies can be taken without anaesthesia.
Dickinson laid the hokum to rest by sliding test tubes up the vaginas of agreeable patients and peering through with a headlamp. Wielding his test-tube spyglass, Dickinson ascertained that head-on penis to cervix contact was rare and interlocking highly unlikely. A century later, magnetic resonance imaging put the notion to rest for certain. A pair of Dutch street acrobats named Jupp and Ida were scanned in the act inside an MRI tube at the University of Groningen, by Willibrord Weijmar Schultz and Pek van Andel, who claimed Leonardo’s coition figures as their inspiration.
What else has mankind gained from Jupp and Ida? A tremendous fudge factor, should mankind wish to boast about the length of its organ. Before Schultz and van Andel’s MRI, anatomists hadn’t realised how much of the penis lies hidden below the body’s surface. The root is nearly two-thirds the length of the pendulous part. So if your erection is, say, 15cm long, go ahead and call it 25. I’ll back you up
images found here. click to enlarge