I was told by a friend who's mother told her that if you wash a man and woman's underwear together, then the woman could get pregnant after she wore them again.
A childhood belief about getting pregnant

others believed things like this
- I used to believe that women got pregnant from rubbing her underwear on a man's underwear.Anon
- When I was little I used to think that as soon as you were married the woman automatically got pregnant.Anon
- Whwn I was like 8 I used to believe woman just got pregnant randomly. Anon
- My sister just recently realized that the lyric "more than a woman" wasn't 4 letter woman!— Anne
- I use to believe that the man peed in the woman to get her pregnant. Didn't know about sperm until sex ed. — das
- I thought the line in the song "more than a woman" was "four-legged woman".— boo