Link reblogged from Give Me Something To Read
If you’ve ever had a good, long look at the human phallus, whether yours or someone else’s, you’ve probably scratched your head over such a peculiarly shaped device. Let’s face it—it’s not the most intuitively shaped appendage in all of evolution. But according to evolutionary psychologist Gordon Gallup of the State University of New York at Albany, the human penis is actually an impressive “tool” in the truest sense of the word, one manufactured by nature over hundreds of thousands of years of human evolution.
(thanks, Nostrich)
Ahh, the semen displacement hypothesis (that the “coronal ridge” on the end of the penis was evolved to remove semen from previous partners during intercourse).
When we talked about this paper in my Paternity, Fidelity, and Parenting class last semester, I think I dropped the best line of my discussion section career. We had just read about the study (described in this article as well), where college students males were found to “thrust deeper and faster, in the wake of allegations of female cheating.”
I argued that this wasn’t really a new discovery, rather it was a commonly held notion. To back up my claim, I quoted R. Kelly’s “Trapped in the Closet Part 4.” Kelly is suspecting his wife of cheating (“And a man picked up the phone…”), but has sex with her as soon as he gets home. But not just any sex, “And that’s when I started going crazy / Like I was trying to give her a baby.” I’m not sure my professor enjoyed the reference.
Source: givemesomethingtoread
