When I was very little, I was allergic to pollen, and since it coated our car every year, my mom explained what it was and how flowers grow. Not long after I learned about how flowers were made, I asked how babies were made, and she explained it in what she must have thought a quite understandable fashion, especially for a 4-year-old. Only problem was, I connected the two, and for years and years I had visions of sperm floating through the like pollen every time a man peed, randomly impregnating any woman that happened to be around.
A childhood belief about reproduction

others believed things like this
- I used to believe people grew from spores and when we got old, we'd grow leaves and flowers etc— Calvin (from my pet tiger Hobbes)
- I thought that 1983 went on for 3 years - had to ask my sister who decided how long a year lasted.— Sally
- I use to believe that the man peed in the woman to get her pregnant. Didn't know about sperm until sex ed. — das
- All flowers had exactly five petals and two leaves.— MD Caruso
- I used to believe that flowerbeds were beds for flowers.— Nina Green
- When I was a child I used to belive that fairies were born from the flowers.— fantasy