Odd evolutionary twist? Why is the head of a man's penis shaped like a mushroom?

[mismused]

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[cantdog]

Sorry, thought you were someone else, there, for a second.

 

[Zeb_Carter]

Okay, what's your thoughts on this? Anyone know why it is bulbous? What purpose does it serve?

You must have missed the PBS program that explained all of this to it's viewing public. It's shaped the way it is so it can scrap out the prior males sperm before depositing it's sperm thus insuring it's sperm is that which fertilizes the womans egg.

 

[champagne1982]

You must have missed the PBS program that explained all of this to it's viewing public. It's shaped the way it is so it can scrap out the prior males sperm before depositing it's sperm thus insuring it's sperm is that which fertilizes the womans egg.

Plus it has that nifty little rim the foreskin stretches over and gets captured, increasing sexual pleasure, I'd imagine, for those who aren't circumsized. Besides, it's cute.

 

[Carnevil9]

Same reason the vagina looks like a taco. So you will want to eat it!

 

[Jenny_Jackson]

It's a guide so I will know where to sink my teeth

 

[Pure]

it looks like a mushroom to ensure that (other) people will be very cautious about picking it or handling it.

 

[Grushenka]

You must have missed the PBS program that explained all of this to it's viewing public. It's shaped the way it is so it can scrap out the prior males sperm before depositing it's sperm thus insuring it's sperm is that which fertilizes the womans egg.

It's an arguable theory much disputed.

Here is an interesting biology professor's blog found when googling 'penis evolution'. He's witty too. Excerpt:

"So I was just browsing through some fun journals (Integrative and Comparative Biology, always good for some unusual stuff) and ran across a paper with a wonderful title: "The Functional Morphology of Penile Erection: Tissue Designs for Increasing and Maintaining Stiffness." If that kind of thing will sell commercial air time during the Super Bowl, it's got to be popular.

As is typical, though, while the promise of salaciousness drew me in, it was the science and the evolutionary story that kept me interested. Amniote penises have had a complex history. They have evolved independently multiple times, and perhaps most troubling to the male ego, they have been secondarily lost at least a few times. And every time they have evolved, they converge on a remarkably similar morphological solution.

That last observation is perhaps not very surprising. The penis has a very simple job to do: to maintain sufficient stiffness to enter an orifice in the mate, and to deliver sperm. That's it. Every amniote settles on a similar solution, forming a hydrostat, a tube containing a pressurized incompressible fluid surrounded by a membrane under tension. It's a kind of glorified water balloon.

Where different amniote lineages differ is in how they build their penis. Mammals have a medial penis containing two inflatable, vascular erectile bodies, and the tissue used for it embryonically is gathered from non-cloacal epithelia and connective tissue. Crocodile and turtle penises contain a single erectile body, and they form their penises from tissues on the ventral cloacal wall. Squamates (lizards and snakes) have paired penises built from lateral cloacal wall tissue. Birds, like crocodiles, assemble a penis (when they have one) from the ventral wall of the cloaca, but they use the lymphatic system as a pump, rather than the blood system."

Then it goes on to discuss penis cross-sections (with illustrations). I also liked the notion of 'building' a penis. Enjoy. Gru

 

[Huckleman2000]

Okay, now that we've got that figured out, consider why the explosion of a nuclear bomb creates a cloud shaped like a mushroom.

Or is it shaped like the head of a penis?

 

[3113]

Okay, what's your thoughts on this? Anyone know why it is bulbous? What purpose does it serve?

Well, you see, when guys moved down from the trees to the ground in order to scavange and hunt, they found themselves in danger from predators. So, often they would hide themselves by laying down in the tall grass or under dirt, doing their best to camouflage themselves.

But there was one problem. While lying there, they tended to think of the women waiting for them back in the trees. And they got erections. Which, poking up from their covering of dirt and grass, gave them away to the predators.

The guys with mushroom-shaped penises, however, fooled the predators into thinking the penis was just a mushroom. These guys survived and passed on the mushroom headed penis onto their off-spring.

Interesting, no?

 

[damppanties]

Well, you see, when guys moved down from the trees to the ground in order to scavange and hunt, they found themselves in danger from predators. So, often they would hide themselves by laying down in the tall grass or under dirt, doing their best to camouflage themselves.

But there was one problem. While lying there, they tended to think of the women waiting for them back in the trees. And they got erections. Which, poking up from their covering of dirt and grass, gave them away to the predators.

The guys with mushroom-shaped penises, however, fooled the predators into thinking the penis was just a mushroom. These guys survived and passed on the mushroom headed penis onto their off-spring.

Interesting, no?

Good thing they didn't encounter any mushroom eating predators.

 

[3113]

Good thing they didn't encounter any mushroom eating predators.

Indeed, but this points out the other advantage and evolutionary reason for the mushroom-head. While hiding under the dirt, penis' waving, our human hunters lured in certain hungry herbivores eager for a mushroom treat. When these were close enough, bending down to taste, our hunter leap up and cut their throats.

Yes, our primative male ancestors were that brave. They used their own cocks as bait so as to get fresh meat for their hungry families.

 

[mismused]

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[Zeb_Carter]

It's an arguable theory much disputed.
...

But it is true, I saw it on a PBS program on TV, so it has to be true!

 

[mismused]

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[damppanties]

Indeed, but this points out the other advantage and evolutionary reason for the mushroom-head. While hiding under the dirt, penis' waving, our human hunters lured in certain hungry herbivores eager for a mushroom treat. When these were close enough, bending down to taste, our hunter leap up and cut their throats.

Yes, our primative male ancestors were that brave. They used their own cocks as bait so as to get fresh meat for their hungry families.

And what of the ancestor who was so into thinking about his woman back in the tree that he was a teeny bit late in leaping up to get that herbivore...

 

[mismused]

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[Grushenka]

But it is true, I saw it on a PBS program on TV, so it has to be true!

So, size does make a difference then?

 

[Grushenka]

And did you know that one of those little tubules within the penis may actually be a male clitoris?

I recall our correspondence now.

 

[mismused]

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[kinkikittyn]

..........

 

[Zeb_Carter]

So, size does make a difference then?

I wouldn't know.

 

[3113]

But it is true, I saw it on a PBS program on TV, so it has to be true!

Naw, Zeb, you know it's only true if it's on Fox News

 

[Guest]

So, size does make a difference then?

Mushrooms or penii?

'Cause I really love eating mushrooms.

 

[Grushenka]

Mushrooms or penii?

My sarcastic size comment was in response to this--

You must have missed the PBS program that explained all of this to it's viewing public. It's shaped the way it is so it can scrap out the prior males sperm before depositing it's sperm thus insuring it's sperm is that which fertilizes the womans egg.