Archive for Sex

The Secrets Behind Penis Shape and Vigorous Sex

Posted in Science with tags , , , , , , , on June 25, 2009 by neandergal

No, these secrets have nothing to do with the sexual prowess of the new found love of your life, but a human evolutionary process that gives rise (no pun intended) to the shape of the human penis today.

An article, Secrets of the Phallus: Why Is the Penis Shaped Like That? in Scientific American by Jesse Berring gives us an explanation of why the shape of the penis is the way it is today and how its anatomy plays a role in reproductive success by displacing sperm in the vagina placed there by other mates. The process is known as the “Semen Displacement Theory.”

The “head”, otherwise known as the glans penis acts as a plunger that sucks out semen possibly placed by a competitor. Those mates equipped with a better “plunger” stood a better chance of displacing another male’s semen and therefore more chance of passing on their genes. The article refers to a behavioral study that shows how sex is more vigorous if a mate suspects infidelity. More vigorous and deeper penetration also means more semen displacement.

Another revelation is how the post ejaculatory sleepy affect acts as prevention against the possibility of “self-displacement of semen” by a second helping of subsequent sex. The refractory period plays a part in reproductive success by acting as a mechanism for avoiding self displacement of semen and gives sperm time to reach an ovum. If you are too tired and temporarily impotent to engage in a second helping soon afterwards, there is less chance of displacing semen and therefore more chance of impregnation.

In other words, the evolutionary process is most definitely involved in the shape of things to come, in a manner of speaking.

Singing for Sex

Posted in Science with tags , , , , , , on June 12, 2009 by neandergal

Gentlemen, if you sing a song, you may get some depending on whether or not she likes your voice. However, be prepared to sing for at least fifteen minutes because this is how long it takes her to decide on whether or not you are the one for her. If she really likes your voice, she will expose her genitals and allow you to have your wicked way. A little tap dancing goes a long way too and she definitely likes it from behind. This lady will finally allow you to have your way when you tap out a “mounting” song that she approves of. Even after you have had your way, she can still reject or accept your sperm…

According to a report in New Scientist, this only applies if you are a pond skater belonging to the species, Gerris gracilicornis. The females have apparently evolved a protective shield that covers their genitalia. When the males are able to woo and sing a happy enough tune for her, she will lift the shield and allow mating to occur.

Since you are not a red-backed water strider in a stationary pool in a mountain stream in Japan or Korea, then your potential female mate will respond very well to fine wine and dinning which is probably the Gerris gracilicornis equivalent of a song and tap dance.

The Science Behind Female Ejaculation

Posted in Science with tags , , , , , , , , , on May 28, 2009 by neandergal

Proper discussion and research on female sexuality and in particular, female ejaculation has been a long time coming. Female ejaculation is often dismissed as myth and mainly attributed to loss of bladder control at the time of orgasm. This is of course still true for some cases, but not all.

Laboratory analysis of fluid expelled from a small group of females who claim to experience female ejaculation tells a different story. A recent report, Everything you always wanted to know about female ejaculation (but were afraid to ask) in New Scientist describes how researchers found significant quantities of the protein prostate-specific antigen (PSA) present in in the fluid. Prostate cells in the male prostate gland produce PSA which is present in serum and semen.

Ultrasounds of the women who experienced female ejaculation showed evidence of a structure surrounding the urethra that is similar to the male prostate gland. The area of the female prostate is located near the G-Spot and is most sensitive to sexual arousal. It appears that stimulating the G-Spot also stimulates the female prostate resulting in ejaculation.

A Most Bizarre Sex Act

Posted in Science with tags , , , , , , , , on May 24, 2009 by neandergal

Spiders weave a tangled sexual web that leads to stiffer competition for passing on their genes. Scientific American reports on a recent study published in the May 2009 issue Evolution that shows how the genitalia of Nephilid and Golden Orb Weaver spiders evolved from simpler to more complex structures.

Male spiders that had more hooks, ridges and twists on their palps stood a greater chance of passing on their genes then their less complex competitors. When the male copulates with the female, the palp breaks off inside the female so there is a greater chance of his sperm fertilizing the female’s eggs. He is not only content from giving her his all, but will stick around her web and chase off any competitors. Female ducts evolved from those that gave straight easy access to more convoluted ducts with twists and turns making it harder for penetration by males lacking the right equipment.

The Longest Penis in the Animal Kingdom!

Posted in Science with tags , , , , , on May 22, 2009 by neandergal

According to a report in New Scientist, hermaphroditic filter-feeders have the longest penises in proportion to their body size in the animal kingdom. Their penis can reach up to eight times their body length. And what’s more length isn’t everything. It appears that stoutness is more beneficial for mating. A stouter more muscular penis is better than a long flexible one…

Excuse me? Farts cause erections…?

Posted in Science with tags , , , , , , , , , on March 7, 2009 by neandergal

According to the article, Fart molecule could be next Viagra published in New Scientist, rats injected with an enzyme that produces hydrogen sulfide in human penises caused erections in the randy little critters. Hydrogen sulfide (H2S) smells like bad flatulance and rotten eggs.

Hydrogen sulfide relaxes blood vessels in the same way as Nitric oxide (NO). Erections occur because the arteries relax and allow blood to flow into the erectile tissue (corpora cavernosa).

What will they come up with next?

More sex please! We’re religious conservatives.

Posted in Politics with tags , , , , , , , on February 28, 2009 by neandergal

A recent survey shows hypocrisy at its best. An article in New Scientist, Porn in the USA, reports on a study by Harvard Business School that shows conservative and religious states are the biggest consumers of online pornography.

Apparently, 5.47 per 1000 consumers of online pornography in Utah regularly exchange bashing their Bible, or Book of Mormon for bashing their Bishop — except on Sundays. It turns out that a 0.1% drop in subscriptions correlates with a 1% increase in post code church attendance. Residents who most agreed with the statement, “I have old-fashioned values about family and marriage,” bought 3.6 per 1000 more subscriptions than those who disagreed with the statement.

It makes one wonder if even the believers really believe. Well, may be on Sundays.