/jp/ - Otaku Culture

[Anonymous No.]

When it comes to sex, some female ducks have taken "no" to a new level. They have evolved vaginas with clockwise spirals that keep out the oppositely spiraled penises of undesirable males, scientists have discovered.

When the female wishes to say "yes," she has some tricks that make it easier for her preferred mate to slip his corkscrew-shaped penis easily inside and achieve fertilization.

"In species where forced copulation is common, males have evolved longer penises, but females have coevolved convoluted vaginas with dead-end cul-de-sacs and spirals in the opposite direction of the male penis," said lead researcher Patricia Brennan of Yale University. "This coevolution results from conflict between the sexes over who is going to control fertilization."

[Tokiko No.]

Cool.

[Anonymous No.]

That's interesting, but >>>/an/ is a place for you.

[Anonymous No.]

Ducks have spiraled genitalia?

[Anonymous No.]

spirals are everywhere nooo

[Anonymous No.]

Duck penises can break test tubes. It's only a matter of time before they evolve traumatic insemination.

[Anonymous No.]

Sex is scary

[Anonymous No.]

So is it impossible to rape a duck, or just extremely difficult?

If only humans had these adaptations -- there would be no doubt in rape trials about whether the woman was willing or not.

[Anonymous No.]

>>8130326
Brennan and her colleagues traveled to a California duck farm, where workers are expert at collecting sperm from drakes. The first step in the collection is to get a drake excited by putting a female duck in his cage. The drake climbs on top, and then the penis emerges. Before its emergence, a drake’s penis is usually completely hidden from view, tucked inside his body like an inside-out sock. Drakes unfurl their pensises differently than male mammals. In mammals, the penis becomes erect as blood flows into the spongy tissue. Ducks pump lymph fluid instead. And as the fluid enters the penis, it does not simply become engorged. It flips rightside-out.

Here’s how it happens, in slow motion. A Muscovy drake everts his penis in about a third of a second, at speeds of 1.6 meters per second.

http://vimeo.com/8342932

Of course, drakes don’t mate with the air. Having made this video, Brennan still needed a way to see how a duck penis actually performs its appointed task. Unable to film duck penises in a real female oviduct, she built a fake oviduct out of silcone. She then managed to get a drake to mate with it. But the overwhelming force of the explosive penis broke the fake oviduct.

[Anonymous No.]

>>8130339
"Anti-rape"
Yeah brilliant, now your rapist wont rape you.
He will brutally beat you to death for hurting his dick.

That sure is a improvement..

[Anonymous No.]

>>8130338
>>8130340
Which is why when I read this article the first thing that sprung to mind was "This is a really good idea for a doujinshi"

[Anonymous No.]

>you need enter vagoo to rape woman
not really

[Anonymous No.]

this reminds me: why do onaholes always have weird looking insides? were they made for duck penises?

[Tokiko No.]

>>8130339
Workaround: Stick a finger in before your penis.

[Anonymous No.]

>>8130346
why boner

[Anonymous No.]

>>8130357
Flip it inside out and put it on your dick.
Now rape her with it as she screams in pain.

[Anonymous No.]

>>8130339
>>8130348
>>8130351
>>8130357
>>8130362
Or stick it in her ass. I doubt many women are willing to walk around with one of those up their butt all day.

[Anonymous No.]

Soon all of your Touhous will evolve to have spiral vaginas that prevent rape and make mindbreak and rape doujins a thing of the past.

[Anonymous No.]

>>8130373
I am already looking forward to the Sanae x Spiralcock doujin's.

[Anonymous No.]

>>8130373
Asians already have slanted vaginas - Evolution in progress?

>>8130362
She could release her bowels as a form of self-defense. But some of you are into that.

[Tokiko No.]

>>8130373
Asians already have slanted vaginas - Evolution in progress?

>>8130362
She could release her bowels as a form of self-defense. But some of you are into that.