My mother used to tell me that when people French-kissed in movies they were actually not really kissing, as with their heads at an angle to each other their lips did not touch (somehow that meant it didn't count as a 'real' kiss).
I'm still inclined to believe that she believed it, too. And still does.
A childhood belief about films

others believed things like this
- I used to believe that french kiss was something coming from France, and that only the French did it— Sasha
- When I was little I believed that when I put lipstick on my lips, the lips grew.— Alba Águila Castelló
- I used to believe that if you kissed someone you HAD to marry them. Even in the movies.Anon
- I used to think actors in movies sometimes had to actually die to make the movies look real.— Dero
- I thought that Count Dracula was the count from Sesame StreetAnon
- I use to beleive that because oui (which sounds exactly like wee) mean yes in french, that poo meant no.— Toby