Or maybe early females just enjoyed the longer roll in the hay and kept mating with the males who took longer to orgasm. Makes you wonder if early human females preferred males who were more bonded to them, meaning they were more likely to stick around when the baby came, and thus mated more often with smoother-penised males. Larger spines are correlated with faster copulation time That said: “What’s also been shown is that larger spines are correlated with faster copulation time, and so one idea is that by losing the spines, you have a kind of decrease in sensation for the male, intercourse takes longer, and that’s been associated with increased bonding or intimacy.” “Some experiments have showed correlation between spines and promiscuity of species: species that are more monogamous, like humans, don’t have spines.” McLean cautioned that, as always, correlation doesn’t mean causation. “That’s been the topic of research from a number of labs,” McLean said, skillfully evading a personal answer to the question. I asked McLean what he thought the bumps were actually used for. Think of ribbed condoms or bump-laden vibrators. But then, when McLean told me they were made out of keratin, I thought, hmmm, maybe the bumps increased female pleasure rather than diminished it. The first time I heard “penile spines” I thought “ouch”. Human penile spines, if they existed, would probably be similar to chimps’, which have a polka dot-esque distribution and are made of keratin, the same tough-yet-yielding substance that makes up our hair and nails. So what exactly does a “penile spine” look like? “Depending on the species, some are bigger and spikier than other,” McLean said. Humans, at some point along the evolutionary road, lost the DNA needed to activate that receptor, and thus, do not have “spines” on our penises anymore. As McLean explained it, humans (like mice and chimps) have an androgen receptor gene that’s necessary to develop penis bumps (penile spines, in scientific terms). I talked to McLean by phone about his remarkable discovery and why the bumps went away.
Lead author Cory McLean of Stanford was studying chimp and human DNA when he came across sequences that had been deleted during human evolution, one of which made human penises naturally rougher and tougher than they are today.
#Bumpy road boner free
(Remember: These tales are for entertainment only if you're interested in getting frisky on your own road trip, be safe.Fight disinformation: Sign up for the free Mother Jones Daily newsletter and follow the news that matters.Ī new article published in Nature finds that human boners used to have bumps. To get your motor running (har har), we rounded up some of the steamiest driving-related sex stories on Reddit - and some from our very own readers. You could have sex with a different person in each town you visit. You can have sex in a random motel, a scenario that's ripe for roleplaying. You can have sex in your car (while parked - never get frisky while driving). Road trips offer up a ton of opportunities for adventurous sex. They're a safer way to beat cabin fever, and who doesn’t love the open road and “I Spy”? But there’s another reason to hit the highway this year: for the sex. Many things experienced an unexpected boost in popularity over the past year - sweatpants, video conferencing services, and, of course, road trips.
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