# Blood capacity of a penis. **URL:** \ **Category:** Factual Questions\ **Created:** [November 19, 2004, 2:30pm UTC](https://boards.straightdope.com/t/blood-capacity-of-a-penis/275653 "2004-11-19T14:30:14Z")\ **Posts on this page:** 11\ **Page:** 4
**Author:** ![threemae](https://avatars.discourse-cdn.com/v4/letter/t/5f9b8f/32.png) [@threemae](https://boards.straightdope.com/u/threemae)\ **Post date:** [January 16, 2005, 8:04am UTC](https://boards.straightdope.com/t/blood-capacity-of-a-penis/275653/61 "2005-01-16T08:04:40Z")
This is brilliant. Fucking brilliant. Science at its finest. ---
**Author:** ![OxyMoron](https://avatars.discourse-cdn.com/v4/letter/o/e9a140/32.png) [@OxyMoron](https://boards.straightdope.com/u/OxyMoron)\ **Post date:** [January 16, 2005, 4:24pm UTC](https://boards.straightdope.com/t/blood-capacity-of-a-penis/275653/62 "2005-01-16T16:24:02Z")
> [@Chronos](#): > > What, it’s not like I just put all the equipment back into the cupboards. I’m going to wash everything before using it for ingestables, of course. Well, um, **Chronos** , it might astonish you, but what you put in the cup is considered at least semi-ingestable by a large part of the population. You should try it sometime. One thought I now have: I hate to think of what you do with your Cleveland _Browns_ souvenir cup. _Nice to see the SDMB back to its usual self._ ---
**Author:** ![Polycarp](https://avatars.discourse-cdn.com/v4/letter/p/82dd89/32.png) [@Polycarp](https://boards.straightdope.com/u/Polycarp)\ **Post date:** [January 16, 2005, 5:50pm UTC](https://boards.straightdope.com/t/blood-capacity-of-a-penis/275653/63 "2005-01-16T17:50:17Z")
Let us note that both degree of erection and degree of flaccidity are variables. What is alleged to be a flaccid penis may be one in, so to speak, dangling mode, but passably infused with blood – merely not sufficient blood to cause hydraulic erection to an erect state (I’m sorry if this is loaded with solecisms; you try phrasing it). Such a penis, while technically flaccid, is significantly larger in all dimensions than a penis fully drained of all erectile-tissue-resident blood, as when one is immersed in cold water. **The Gaspode** ’s seemingly-well-endowed friend was one of those people who ordinarily does not go completely flaccid. (I recall reading at one time, but suspect it to be merely urban legend, that one of the true physiological differences between black and white males was that there was a genetic tendency for whites to go truly flaccid, while blacks’ penises remained moderately infused as a general rule, and thus appeared larger, giving rise to the urban myth about black men having large penises. For what I hope are obvious reasons, I have not conducted a thorough investigation as to the truth of this matter. :)) Likewise, it’s been my own experience that an erect penis (mine, and the couple of times I’ve observed another male person through the full process of arriving at orgasm) comes to a state of engorgement and consequent erection at a given stage of stimulation, but grows marginally larger as it approaches orgasm and ejaculation. ---
**Author:** ![chaoticbear](https://avatars.discourse-cdn.com/v4/letter/c/f07891/32.png) [@chaoticbear](https://boards.straightdope.com/u/chaoticbear)\ **Post date:** [January 16, 2005, 6:47pm UTC](https://boards.straightdope.com/t/blood-capacity-of-a-penis/275653/64 "2005-01-16T18:47:02Z")
He brings up a good point. There can also be different degrees of stimulation depending on how aroused/stimulated one is. I know mine can vary by a full quarter-inch when comparing me just looking down and saying “Oh look. I have a hard-on” and me watching porn/reading erotica for a while. ---
**Author:** ![Alonzo\_John\_Blitz](https://avatars.discourse-cdn.com/v4/letter/a/85e7bf/32.png) [@Alonzo\_John\_Blitz](https://boards.straightdope.com/u/Alonzo_John_Blitz)\ **Post date:** [January 17, 2005, 1:21am UTC](https://boards.straightdope.com/t/blood-capacity-of-a-penis/275653/65 "2005-01-17T01:21:40Z")
**Threadjack** I read somewhere (or maybe I’m making it up) that an evolutionary dead end equipped early human males with wheels instead of legs. Unfortunately, it also equipped them with a six foot dick. They kept rolling over their own dongs and were consequentially crabby, irritable and impotent. **End threadjack** ---
**Author:** ![FrostySonofThunder](https://avatars.discourse-cdn.com/v4/letter/f/dfb087/32.png) [@FrostySonofThunder](https://boards.straightdope.com/u/FrostySonofThunder)\ **Post date:** [January 17, 2005, 7:55am UTC](https://boards.straightdope.com/t/blood-capacity-of-a-penis/275653/66 "2005-01-17T07:55:09Z")
It’s because of threads like this that I finally had to pony up the money and join SDMB after lurking, off and on, for over a year. Witty banter, fun science, and **Polycarp** made me look up the meaning of a word. Oh, and Unca Cecil is Da Man. (It never hurts to suck up to the Mighty One. 😃 ) ---
**Author:** ![Shade](https://avatars.discourse-cdn.com/v4/letter/s/2bfe46/32.png) [@Shade](https://boards.straightdope.com/u/Shade)\ **Post date:** [January 17, 2005, 3:53pm UTC](https://boards.straightdope.com/t/blood-capacity-of-a-penis/275653/67 "2005-01-17T15:53:26Z")
“CHRONOS! Why are you fucking your Cleveland Indians souvenir beverage cup? I hope you don’t expect me to drink from that later!” ---
**Author:** ![Alonzo\_John\_Blitz](https://avatars.discourse-cdn.com/v4/letter/a/85e7bf/32.png) [@Alonzo\_John\_Blitz](https://boards.straightdope.com/u/Alonzo_John_Blitz)\ **Post date:** [January 17, 2005, 4:25pm UTC](https://boards.straightdope.com/t/blood-capacity-of-a-penis/275653/68 "2005-01-17T16:25:59Z")
_consequently_ not consequentially (what the hell was I drin…thinking?) ---
**Author:** ![Shirley\_Ujest](https://avatars.discourse-cdn.com/v4/letter/s/45deac/32.png) [@Shirley\_Ujest](https://boards.straightdope.com/u/Shirley_Ujest)\ **Post date:** [January 17, 2005, 4:44pm UTC](https://boards.straightdope.com/t/blood-capacity-of-a-penis/275653/69 "2005-01-17T16:44:17Z")
> [@Seven](#): > > I tried to talk my wife into helping with the second half of this experiment, but we ended up just having sex. I sort of forgot to put my Cock in a Cup® after we got going. Cock in a Cup…yeah, that is about the size of it alright…generally speaking, not of Seven per se. oh you know what I mean. ---
**Author:** ![Shirley\_Ujest](https://avatars.discourse-cdn.com/v4/letter/s/45deac/32.png) [@Shirley\_Ujest](https://boards.straightdope.com/u/Shirley_Ujest)\ **Post date:** [January 17, 2005, 4:45pm UTC](https://boards.straightdope.com/t/blood-capacity-of-a-penis/275653/70 "2005-01-17T16:45:50Z")
> [@Seven](#): > > I tried to talk my wife into helping with the second half of this experiment, but we ended up just having sex. I sort of forgot to put my Cock in a Cup® after we got going. Cock in a Cup…good to the last drop. Because a good joke must be beaten like a dead horse. ---
**Author:** ![Polycarp](https://avatars.discourse-cdn.com/v4/letter/p/82dd89/32.png) [@Polycarp](https://boards.straightdope.com/u/Polycarp)\ **Post date:** [January 17, 2005, 4:56pm UTC](https://boards.straightdope.com/t/blood-capacity-of-a-penis/275653/71 "2005-01-17T16:56:04Z")
The **Chronos** Displacement Test sheds entirely new light on why that great Greek mathematician ran down the street naked shouting “Eureka!” after having discovered displacement! 😃 [Previous page](https://boards.straightdope.com/t/blood-capacity-of-a-penis/275653.md?page=3)