they are the same size because penis size is a dna think if I wasl blessed with a 8 inch penis its becasue its in my dna and whether I was fat or skinny I would have a big penis
unlike girl twins with boobs and butt since they are basically sacks of fat it twins can have diffrent sizes based on their body mass index and body fat percentage
but something like penis size which is set in the dna will be the same in twins because they share the same dna
just like eye color hair color nose size
Untrue! According to my boyfriend who is an identical twin. He claims that he and his twin brother have different sizes...
@Anatur did you pick the right brother?
I have no first hand knowledge of this, but I would think they would be in the same category but unrelated after that. Like they would both be small, average, or large, but one could be 5 inches while the other was 6. I don't know that's just my idea after reading the question.
No,twins can have any physical differences.
I've seen twins where 1 is fat,the other is skinny,I personally know a set of twins,they are girls,look identical,one has big breasts and a butt(curves) and the other is stick thin(maybe because she's an athlete?)
Well, the two I know are identical twins as far as I can tell. They basically look the same, same build, and everything. the only difference is the way they have their hair. one has medium hair, the other has a buzz cut.
identical twins yes haha. because my ex is an identical twin.and him and his twin have the same exact cock.
Lol. Kind of sound like you found out first hand.
Hahaha well my best friend had sex with his twin. so I saw him naked. plus they are always naked because they are weirdos.and they have a lot of tattoos so they show em off haha
Lol. That's kinda funny. but cool lol
Scroll Down to Read Other Opinions
What's Your Opinion? Sign Up Now!Look this all has to deal so many variables. There is a difference between Identical twins and Fraternal. Identical comes from one embryo that splits into two. so all of the genetic make up comes from the same sperm. so other than a few minor differences, they're just alike. Penis size and all. As for Fraternal, these are two seperate embryos from two seperate sperm. so the genetic make up may have similar qualities, but they can also be very different. In this case, penis size may very.
Well, the Barbi Twins don't have identical sized boobs. Why should guy twins have identical sized penises?
Identical twins will be exactly the same size.
It depends. If the twins are monozygotal (identical) then they're the same.
If they're dizygotal (non-identical), then they're different.
they will be very similar but could change in size and shape depending on how they masturbate and exercise
Well I'm an identical twin and me and my brother measured ourselves and came to the conclusion that I'm 2" longer then him. So I don't think it has anything to do with DNA and it must be to do with the twins lifestyle. Because I am very sporty and busy and I am a heavy masturbator whereas he isn't as sporty or busy and he said that he wanks only once a day whereas I on average do it 2-3 times per day
Yes, me and my twin brother have the same size.
maybe they do.
I think they do.
I have a twin and from what I know, we are both on the bigger side. I think it has a lot to do with genetics.
Sexual Relationships 
Sexual Health 
Most Helpful Guys