# Do identical twins have identical genitalia? **URL:** \ **Category:** Factual Questions\ **Created:** [July 27, 2006, 3:39am UTC](https://boards.straightdope.com/t/do-identical-twins-have-identical-genitalia/366211 "2006-07-27T03:39:34Z")\ **Posts on this page:** 20\ **Page:** 2
**Author:** ![Elendil\_s\_Heir](https://avatars.discourse-cdn.com/v4/letter/e/7cd45c/32.png) [@Elendil\_s\_Heir](https://boards.straightdope.com/u/Elendil_s_Heir)\ **Post date:** [July 27, 2006, 7:41pm UTC](https://boards.straightdope.com/t/do-identical-twins-have-identical-genitalia/366211/21 "2006-07-27T19:41:11Z")
[QUOTE=alphaboi867] I knew a set of twins in high school who’s parents did just that! Apparntly they wanted a easy foolproof way of telling them apart. [/QUOTE] Dear Og! How often would the parents decide they wanted to ensure they were speaking to the right twin? How often would they do “spot checks”? The mind boggles. ---
**Author:** ![diggleblop](https://avatars.discourse-cdn.com/v4/letter/d/ac91a4/32.png) [@diggleblop](https://boards.straightdope.com/u/diggleblop)\ **Post date:** [July 27, 2006, 8:19pm UTC](https://boards.straightdope.com/t/do-identical-twins-have-identical-genitalia/366211/22 "2006-07-27T20:19:05Z")
[QUOTE=Cervaise] Not at all. In fact, given identical female twins, one of them will have a penis. But you should have asked about fraternal twins of different sexes; _they_ have identical genitalia. [/QUOTE] What? ---
**Author:** ![Lemur866](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/lemur866/32/434_2.png) [@Lemur866](https://boards.straightdope.com/u/Lemur866)\ **Post date:** [July 27, 2006, 8:20pm UTC](https://boards.straightdope.com/t/do-identical-twins-have-identical-genitalia/366211/23 "2006-07-27T20:20:51Z")
[QUOTE=yBeayf] The fuck? [/QUOTE] Proof that loneliness, cheeseburgers and genitalia identification are a dangerous mix. ---
**Author:** ![jimbeam](https://avatars.discourse-cdn.com/v4/letter/j/858c86/32.png) [@jimbeam](https://boards.straightdope.com/u/jimbeam)\ **Post date:** [August 20, 2006, 2:03pm UTC](https://boards.straightdope.com/t/do-identical-twins-have-identical-genitalia/366211/24 "2006-08-20T14:03:13Z")
They can be genetically identical, but not genitally identical. At least the sisters I dated weren’t. 😉 ---
**Author:** ![danceswithcats](https://avatars.discourse-cdn.com/v4/letter/d/9e8a1a/32.png) [@danceswithcats](https://boards.straightdope.com/u/danceswithcats)\ **Post date:** [August 20, 2006, 6:16pm UTC](https://boards.straightdope.com/t/do-identical-twins-have-identical-genitalia/366211/25 "2006-08-20T18:16:38Z")
From what I saw in Playboy, The Dahm triplets look about as identical as you can get. I’ll be happy to advise further, based upon the success of this grant application. 😉 ---
**Author:** ![Ficer67](https://avatars.discourse-cdn.com/v4/letter/f/c57346/32.png) [@Ficer67](https://boards.straightdope.com/u/Ficer67)\ **Post date:** [August 20, 2006, 6:25pm UTC](https://boards.straightdope.com/t/do-identical-twins-have-identical-genitalia/366211/26 "2006-08-20T18:25:30Z")
This is the new millenium, it is not unheard of to tatoo ones son/daughter. What to tattoo them however remains a mystery WoW MoM WoW ---
**Author:** ![TheLoadedDog](https://avatars.discourse-cdn.com/v4/letter/t/35a633/32.png) [@TheLoadedDog](https://boards.straightdope.com/u/TheLoadedDog)\ **Post date:** [August 21, 2006, 12:51am UTC](https://boards.straightdope.com/t/do-identical-twins-have-identical-genitalia/366211/27 "2006-08-21T00:51:27Z")
Reminds me of when I was a kid in the 70s finding a stash of dirty magazines… A friend and I were looking at the “pussy quiz” where they’d show pictures of five or ten vaginas, and then pictures of the women’s faces, and you had to match them up. The stranges part of all was not only was it fun, but it was fun in an intellectual sense, and we got right into it, and there was no sense of “looking at rude photos” titillation about it. ---
**Author:** ![agirlnamedsuess](https://avatars.discourse-cdn.com/v4/letter/a/35a633/32.png) [@agirlnamedsuess](https://boards.straightdope.com/u/agirlnamedsuess)\ **Post date:** [July 27, 2012, 5:34pm UTC](https://boards.straightdope.com/t/do-identical-twins-have-identical-genitalia/366211/28 "2012-07-27T17:34:54Z")
> [@Colibri](#): > > Identical twins, while genetically identical, are not necessarily completely identical physically. Development can affect their physical appearance. For example, identical twins have different fingerprints. > > Generally, their genitalia should be just as similar, on average, as any other part of their anatomies. However, in some cases identical twins would be expected to differ in this, just as they would in any other aspect. > > Why do you ask? Are you dating a twin, and wondering if they are pulling a fast one on you? Ok,so this has been on my mind for YEARS. I think I am married to a twin and they are pulling a fast one on me. Sorry to be so graphic,but is it possible for the same man to have a longer and curved to the left penis one day and a straight shorter penis on a different day (both times the penis is erect)? My common sense tells me “no”. No one seems to believe what I vividly see going on in my own home,andmaybe it is because I have identical triplets in my family and I am clearly able to tell the difference between them (personality and minute differences in looks). For me,it is so obvious. But when I question this, people think I am nuts. (And I have to admit, it does sound crazy.) I think there has to be an explanation for vastly different penis’ and personalities, right??? ---
**Author:** ![Speak\_to\_me\_Maddie](https://avatars.discourse-cdn.com/v4/letter/s/58956e/32.png) [@Speak\_to\_me\_Maddie](https://boards.straightdope.com/u/Speak_to_me_Maddie)\ **Post date:** [July 27, 2012, 5:47pm UTC](https://boards.straightdope.com/t/do-identical-twins-have-identical-genitalia/366211/29 "2012-07-27T17:47:20Z")
> [@agirlnamedsuess](#): > > Ok,so this has been on my mind for YEARS. I think I am married to a twin and they are pulling a fast one on me. . . Is your husband that magician that does the New Transported Man act? ---
**Author:** ![Qadgop\_the\_Mercotan](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/qadgop_the_mercotan/32/83_2.png) [@Qadgop\_the\_Mercotan](https://boards.straightdope.com/u/Qadgop_the_Mercotan)\ **Post date:** [July 27, 2012, 6:00pm UTC](https://boards.straightdope.com/t/do-identical-twins-have-identical-genitalia/366211/30 "2012-07-27T18:00:38Z")
> [@agirlnamedsuess](#): > > I think I am married to a twin You _think_ you’re married to a twin? Can you elaborate on that? ---
**Author:** ![BubbaDog](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/bubbadog/32/333_2.png) [@BubbaDog](https://boards.straightdope.com/u/BubbaDog)\ **Post date:** [July 27, 2012, 6:07pm UTC](https://boards.straightdope.com/t/do-identical-twins-have-identical-genitalia/366211/31 "2012-07-27T18:07:45Z")
> [@agirlnamedsuess](#): > > Ok,so this has been on my mind for YEARS [snip] \*\*\* Insert obligatory zombie joke here\*\*\* About 6 years if you go by this thread. And I too want to know why you {Think} that you are married to a twin. ---
**Author:** ![johnpost](https://avatars.discourse-cdn.com/v4/letter/j/f17d59/32.png) [@johnpost](https://boards.straightdope.com/u/johnpost)\ **Post date:** [July 27, 2012, 6:27pm UTC](https://boards.straightdope.com/t/do-identical-twins-have-identical-genitalia/366211/32 "2012-07-27T18:27:54Z")
zombie or no do you consume enough food for 3 adults? at mealtime does he eat like he has skipped a meal? is he able to start having sex within a minute, like a teenage guy? do you hear noises under the bed? do his personality change at the same time and synchronized with penis change? ---
**Author:** ![zoid](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/zoid/32/336_2.png) [@zoid](https://boards.straightdope.com/u/zoid)\ **Post date:** [July 27, 2012, 6:30pm UTC](https://boards.straightdope.com/t/do-identical-twins-have-identical-genitalia/366211/33 "2012-07-27T18:30:11Z")
> [@Qadgop\_the\_Mercotan](#): > > You _think_ you’re married to a twin? Can you elaborate on that? I THINK what she’s saying is that to her knowledge her husband does not have a twin brother but at times it seems as if he’s been replaced by his doppelganger and demonstrates slightly differing physical and emotional characteristics. Do I have that correct **agirlnamedsuess**? ---
**Author:** ![Czarcasm](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/czarcasm/32/4050_2.png) [@Czarcasm](https://boards.straightdope.com/u/Czarcasm)\ **Post date:** [July 27, 2012, 6:39pm UTC](https://boards.straightdope.com/t/do-identical-twins-have-identical-genitalia/366211/34 "2012-07-27T18:39:13Z")
> [@agirlnamedsuess](#): > > Ok,so this has been on my mind for YEARS. I think I am married to a twin and they are pulling a fast one on me. Sorry to be so graphic,but is it possible for the same man to have a longer and curved to the left penis one day and a straight shorter penis on a different day (both times the penis is erect)? My common sense tells me “no”. No one seems to believe what I vividly see going on in my own home,andmaybe it is because I have identical triplets in my family and I am clearly able to tell the difference between them (personality and minute differences in looks). For me,it is so obvious. But when I question this, people think I am nuts. (And I have to admit, it does sound crazy.) I think there has to be an explanation for vastly different penis’ and personalities, right??? On a related note I have this condition where my left leg is just a bit too long, and I was wondering if you would mind pulling the other one. ---
**Author:** ![TriPolar](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/tripolar/32/3008_2.png) [@TriPolar](https://boards.straightdope.com/u/TriPolar)\ **Post date:** [July 27, 2012, 6:51pm UTC](https://boards.straightdope.com/t/do-identical-twins-have-identical-genitalia/366211/35 "2012-07-27T18:51:11Z")
> [@zoid](#): > > I THINK what she’s saying is that to her knowledge her husband does not have a twin brother but at times it seems as if he’s been replaced by his doppelganger and demonstrates slightly differing physical and emotional characteristics. > > Do I have that correct **agirlnamedsuess**? I thought she just wasn’t sure if she was married or not. ---
**Author:** ![Drunky\_Smurf](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/drunky_smurf/32/449_2.png) [@Drunky\_Smurf](https://boards.straightdope.com/u/Drunky_Smurf)\ **Post date:** [July 27, 2012, 6:59pm UTC](https://boards.straightdope.com/t/do-identical-twins-have-identical-genitalia/366211/36 "2012-07-27T18:59:02Z")
> [@Ficer67](#): > > This is the new millenium, it is not unheard of to tatoo ones son/daughter. What to tattoo them however remains a mystery > > WoW MoM WoW Clearly you tattoo one of them with a goatee and just hope it turns out to be the right one. ---
**Author:** ![johnpost](https://avatars.discourse-cdn.com/v4/letter/j/f17d59/32.png) [@johnpost](https://boards.straightdope.com/u/johnpost)\ **Post date:** [July 27, 2012, 8:55pm UTC](https://boards.straightdope.com/t/do-identical-twins-have-identical-genitalia/366211/37 "2012-07-27T20:55:47Z")
zombie or no give him a dick hickey. ---
**Author:** ![obfusciatrist](https://avatars.discourse-cdn.com/v4/letter/o/4af34b/32.png) [@obfusciatrist](https://boards.straightdope.com/u/obfusciatrist)\ **Post date:** [July 27, 2012, 10:29pm UTC](https://boards.straightdope.com/t/do-identical-twins-have-identical-genitalia/366211/38 "2012-07-27T22:29:34Z")
Here’s what you do. Every time you have sex with the curved one, do it on the left side of the bed. When you have sex with the smaller one, do ti on the right side. Don’t mention to him what you’re doing. In a couple years when you’re about to have sex with the curved one say “Hey, do you think it would be weird if we had sex on the right side?” If he says “What are you talking about, we do it over there all the time” then you have your answer. ---
**Author:** ![Joey\_P](https://avatars.discourse-cdn.com/v4/letter/j/919ad9/32.png) [@Joey\_P](https://boards.straightdope.com/u/Joey_P)\ **Post date:** [July 27, 2012, 10:37pm UTC](https://boards.straightdope.com/t/do-identical-twins-have-identical-genitalia/366211/39 "2012-07-27T22:37:01Z")
> [@obfusciatrist](#): > > Here’s what you do. Every time you have sex with the curved one, do it on the left side of the bed. When you have sex with the smaller one, do ti on the right side. Don’t mention to him what you’re doing. > > In a couple years when you’re about to have sex with the curved one say “Hey, do you think it would be weird if we had sex on the right side?” If he says “What are you talking about, we do it over there all the time” then you have your answer. (On the off chance the the ‘op’ is for real… How about just making a mark on one of them. Magic marker on the back of one of their necks with a casual touch shouldn’t be too hard. ---
**Author:** ![Svejk\_1](https://avatars.discourse-cdn.com/v4/letter/s/ea666f/32.png) [@Svejk\_1](https://boards.straightdope.com/u/Svejk_1)\ **Post date:** [July 27, 2012, 10:40pm UTC](https://boards.straightdope.com/t/do-identical-twins-have-identical-genitalia/366211/40 "2012-07-27T22:40:19Z")
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