Not sure if many of you on here have a genetics/human devolopment background ... but I wanted to share a theory my husband has come up with - and I thought I would share it - and see if there is any information you can share. As you know - most human charachteristics are genetically controlled. Eye color for example is controlled by a mutiple alele, multiple gene scenario - where a number of genes control the color, hue, shape, etc of the eye. however the real attributes are actually finalized by the environment. The types of protiens that are eaten by the mother - the type and amount of sunlight in the early years, the hormones a mother produces, and other factors determine some of the final attributes. The environment basically enables certain chemical reactions which helps to mold the final product. My husband states that penis size is very similar to this. Genetics plays a significan tpart - telling the body how much to grow, what shape, etc at makes the basic form a male child will become. But the developmental environment also molds what the body does as it grows. The two biggest factors involved when a Baby develops in a mothers womb are food (digested by the mother and entered into the blood stream) and hormones. Hormones are probably the biggest factor - as they can direct which protiens are created and in which amounts. It can cause electrical impulses that also may change development in one way or another. Anyway - to boil it down to the basics - he claims that orgasm, arousal, pleasure, etc. all cause the body to release special hormones and chemicals into the mothers blood stream. These substances influence the development of the child, and can actually trigger enhanced development of the child. He theorizes that if a woman has lots of arousal, lots of orgasms, and lots of sex during pregnancy then his offspring will have an increase in the development of the sexual organs in the child. This will give a female child a larger sex drive, larger organs, and lead to a more promiscuous life. This will also lead to a male son with a larger penis and such. Has anyone else thought of this? Does it hold any water or is he just trying to get me in bed more? Can anyone here trace their size to the parents activity when they were in utero? Can anyone compare their male children - say the first child you had you had lots of sex and orgasms and your child was larger - and your second child you didn't feel as well and you had less or no sex and your second son was smaller than your first? We are having a son, and when I was pregnant with our first we were very active and my son seems to be large. His cousin is significantly smaller and his parents were very inactive during pregancy due to complications. We are having our second, and it is going to be a boy. Should we try extra hard to make sure he is larger? Genetically he will never be a huge guy - but I definately do not want him to be small. Any thoughts or comments?