I used to believe that 'girl' sperm were pink and 'boy' sperm were blue, so that if a pink sperm got to the lady's egg first the baby would be a girl etc. This was after a very colourful sex education film at school. I believed this until a worryingly advanced age.
sex
7,896 beliefs in this area

I used to think that people who put newspapwer up in their livingroom windows did so becuase they wanted to 'have it off' in the daytime....Curse those older kids.
I used to believe that my mother found me in my grandfather's garden and the funny thing is she didn't tell me otherwise until I was about 8 years old.
I overheard some girls talking in a field. One (I thought) was saying that there were red pyramids and white pyramids.
I butted in and stated quite plainly that you didn't get red pyramids - they were all yellow.
Then they told me they were talking about 'periods'.
I assume by 'white' they meant discharge - so I'm not sure who this is more embarrasing to.
My brother and I used to believe that girls would grow a penis when they got older and that it was called a China.
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A friend of mine used to think that you got pregnant from eating baby food.
I used to believe that all girls had a small baby in their tummy just waiting until they got married where it would begin to grow and eventually be born. The reality is much more fun!!
I used to think that condoms were just "willy warmers" and that they were woollen like a tea cosy and used to prevent the penis from getting cold and falling off
I used to believe…
told a friend of mine that white mens sperm was white, black mens sperm was brown and oriental mens sperm was a kind of off green yellow colour.... she still believes it to this day.
After quizzing my mum about babies in tummies, I used to think that eggs and sperm got together in the toilet as that was the only place that mummy and daddy's 'bits' ever shared.
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I used to believe my penis, would grow to such an insane length, that space aliens would land on it, and then take over the world.
I used to believe that men had baby boys and women had baby girls.
Up until I was ten I thought that babies were born wearing a knitted bobble hat and a cardigan. Girls had pink and boys had blue - which is how their mummy's knew what sex they were when they popped out.
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I used to believe that a pregnant woman could be pregnant again before giving birth, so I wondered if the second baby could be born before the previous one.
My parents told me I was found under a gooseberry bush which I thought odd for a long long time.
My science teacher told me that when you reach puberty, the stuff that makes a woman pregnant begins to appear in your *urine*. I was forced to draw the conclusion that a man had to pee inside the woman to make her pregnant!