When I was 9 I read a quote from a celebrity in Reader's Digest that said something alone the lines of "when a man has an orgasm, his legs shake a bit and then he goes to sleep". So for the next few weeks until I investigated further I believed that!
A childhood belief about sex

others believed things like this
- i used to believe it took 7 years to digest gum— lorenn
- I believed that the gap between the double yellow lines in the road was a special lane for motorcycles.— Joel
- Anyone else think that Emergency Exits were special exits for some celebrity called 'Emer Gency' to use?— Mark Yardley
- i used to think when you had an orgasm you were giving birth— splooger
- I always thought only boys could orgasm. — kg
- when i was little i always asked my mom if my aunt had ant legs or people legs.— kelly