My best friend's mom liked to amuse herself by giving her two girls imaginitive answers to their questions, such as, the original purpose of the many freeways and overpasses in our city were once made as dinosaur trails and only after they died did people start driving around on them. This habit, incedentally, ruined her credibility when explained the truth about where babies come from to her older daughter, who retorted "nuh-uh, you're making it up." The truth was stranger than fiction.
A childhood belief about reproduction

others believed things like this
- I used to think that the trails that Airplanes left in the sky, that's how clouds were made.Anon
- I used to believe that when people eloped that meant they were making babies...Anon
- every one lived until they were 100 and then they died no questions asked— sext4eva
- My friend used to believe baby oil was made from babiesAnon
- I used to believe I would be able to fly when I grew up. Sometimes I think that still might be truth.— Melissa M
- I used to believe all babies came out as girls and later on in life some of those girls turned into boys — Tom