Is penis size hereditary?

I'm just a bit curious as I'm in a relationship where we are in our baby making years and I think my girlfriend just assumes that as I'm well hung any boys we have will be too.

Is this likely to be the case? Maybe some guys on here with brothers will be able to help me out

Sure penis size is hereditary, Dorset, but you never know from which family line the prized gene will come.

Yours? or Hers? All you can do is wait and see.

Like anything, penis size is somewhat hereditary. My dad is hung pretty big, and I have 2 other brothers. We compared when we were young, and clearly there are no guarantees. I'm 9.25", my older brother is 9", but our youngest brother is only 7.5". If you're hung really big, I would think your sons would have better chance of being hung too. Have to wait and see though.

Spooky, just a couple of hours after posting this me girlfriend tells me she's just worked out that she's a week late. We weren't even trying!

I've had unprotected sex about 3 times in my entire life and it looks like I'll have produced 2 babies from it!!!

Well, I've seen my dad naked before, and he's pretty big. My brothers are too. I don't have any exact measures, though.

Well, My Dad had a really fat one with HUGE ball bag. All the sons are also above average thick and have big balls. But, who knows.

Dad's just over 10 inches and I am 9 1/2 inches and my two younger brothers are both over 10 inches now...Jose'Latinoboy9

well i know my dad is pretty big i would guess maybe 9 or 9.5, and i am 10.5, but my brother is about 6, but my nephew his son is about 9. so maybe it skips a generation. who knows.

I don't have any brothers and I only recall seeing my Dad's penis one time in my life. I know that a great deal of my size was caused by a pituitary tumor when I was young so I can't say if mine is hereditary or not. I have two sons, one is well above average and the younger is average. I have three grandsons, two of which were nicknamed "Meat" by the nurses when they were born. The weird thing about it is each of my sons have a son that was nicknamed "Meat" at birth. Maybe the mother's side does have some affect on penis size.

It has all been said.
Like height, tall people tend to have tall children but not always. I think penis size is the same. Hung tend to produce hung but there are so many variables in the gene mix that it is quite difficult to predict.
Even our comparative references can be somewhat distorted.
Sometimes brothers dont mature at the same ages. Sometimes seeing a father when we are young leaves a size impression that may not be too acurate.

Trust nurses to nickname a kid "Meat" when he's only a few hours old.

I know that's a bit strange...

Anyway I've never seen my dad naked but he has a lot of brothers, who I suspect are quite well hung, they're 'big' guys, not all that attractive, but they have attractive partners. Also my dad is a bit of a ladies man.

I don't know how big he is but just quite big I guess. It is hereditary but there is still a chance that a son won't be hung even if his dad is huge. Usually though, they are.

Like diabetes! (That's something else I have to watch out for.)

Okay, now I definitely consider circumcision advocacy by any nurse a sign of severe mental illness.

Of course it is. If not in the 1st generation, it is in the 2nd, selectively amongst the descendants of the person with a large penis.
(Well, it should be hereditary, as every noble privilege :evilgrin: ) !

Dukely yours,

"Ralexxshire"