A childhood belief about getting pregnant

I used to believe that women could get pregnant just by being in the vicinity of men a lot (this was why women got pregnant after marriage). This belief stemmed from overhearing my mother and her friend discussing the neighbor girl: 'If that Darlene doesn't stop hanging around boys, she's going to end up pregnant.' I had a brief period worrying about whether I should be in my father's company, but reasoned that perhaps you had to be a similar age to the man/boy in question. Luckily, I had no brothers.