my wife has told me that she believed that the man's penis somehow detached from his body, flew over to the woman, and did whatever it had to do; she said her mother started out telling her that 'the man and woman lie down together in bed", and she never got beyond the 'side by side' visual. needless to say, she is often asked about my 'flying penis' by smart-aleck relatives.
A childhood belief about sex

others believed things like this
- I used to think that Frankie Avalon sang, "Hey Penis, Oh, penis..." instead of "Hey Venus."Anon
- I used to believe that gay sex involved a man sticking his penis inside another man's penis.Anon
- My mother told me that if I kept sucking my thumb I would grow another one out the side of the first one.Anon
- I used to believe that a penis was called a bobby because my mum told me... I believed this until I was 15.— Patricia
- I used to believe that if I scratched one side of my body I had to
scratch the other to be "even".— Greg - I used to believe that gay guys had sex by sticking their penis in the other's penis.— Fanbrat