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penis + (6)

Cocks (almost) don't have a penis, a trait common to 97% of bird species, but they can grow one when the expression of the Bmp4 gene is prevented. The expression of this gene causes the percursor of the phallus in the chick embryo to undergo apoptosis (cell death) and Bmp genes are also involved in 3 other bird traits: feather development, toothlessness and beak shape. In penis-less bird species, copulation requires a sex maneuver nicknamed the cloacal kiss (in French) which requires a full cooperation of the female (3 min of tender parrot sex). In species where males have a penis, like ducks, females are less lucky: the coevolution of the rather convoluted morphology of male and female genitalia has been hypothezised to occur through sexual conflict [many previouslies]. The evolutionary mechanisms that drove phallus reduction in most birds species are still unknown.
posted by elgilito on Jun 11, 2013 - 19 comments

Hahaha, that worm looks like a penis! Oh, wait, that's the headline. Well, for the most part: 'Missing link' connects two weird, wormy sea creatures [more inside]
posted by rosswald on Mar 13, 2013 - 10 comments

``Several people had pledged their penises over the years — including an American, a Briton, and a German — but Arason's was the first to be successfully donated, Hjartarson said.'' [more inside]
posted by Blazecock Pileon on Apr 12, 2011 - 40 comments

What is sexy? Sexy is Lio, in 1980, dancing around a giant yellow banana phallus.
posted by puny human on Jun 6, 2010 - 79 comments

BREAKING NEWS: Kasparov assailed by flying dong. Possible inspiration
posted by thirteenkiller on May 19, 2008 - 83 comments

Whip it out and dance don't be afraid (NSFW?). Yes! It is that time of the year again : today Japanese people celebrate Kanamara Matsuri (金まら祭り), the annual Kawasaki Fertility Festival (previously on Hōnen Matsuri (豊年祭)
posted by elpapacito on Apr 6, 2008 - 14 comments

Respect the cock! Or duck, as the case may be. Avian co-evolution in action, from the New York Times.
posted by adamgreenfield on May 1, 2007 - 29 comments

2 heads are better than 1 Ever heard of diphallus? Well, now you have. See here as well
posted by bmpetow on Aug 22, 2006 - 31 comments

"By jabbing a threatening phallus at your enemy like a wild animal, you aren't just belittling him, but also making him your sexual inferior." Apparently, George W. Bush let some boys in East Lampeter, PA know that they were sexually inferior. But Kerry too has jabbed a threatening phallus recently. [Bush link via Kottke; first link previously discussed on MeFi]
posted by limitedpie on Jul 12, 2004 - 21 comments

The Icelanding Phallological Museum. A museum dedicated to the male sexual organ, with an online gallery of phalluses of many species.
Lingam Gnosis is the 'ancient art of penis reading' - like palmistry, only with penises, which can be classified into alchemical earth, fire, water and air types.
Foreskin.org is an educational site about the male foreskin (with photographs and articles).
(Needless to say, probably not suitable for work).
posted by plep on Jul 25, 2003 - 5 comments

Did you hear the one about the Harvard girls and the large snow phallus? Oh, and here's the response featuring the memorable line: "it means that we, as women, must be subject to erect penises whether we like it or not."
posted by adrober on Feb 23, 2003 - 114 comments