A childhood belief about reproduction

I used to believe you could get a woman pregnant by kissing on the mouth. I watched loads and loads of movies growing up as a kid. Sex wasn't something I really knew about and I didn't see all that much of it in these movies. Well anyway, in a lot of the films, the couple would kiss and get all hot and heavy. Then they'd lay down on the bed, or the couch, or some other place, and then the screen would simply go black or cut foward to another scene and all of a sudden the couple is married (assumably) with children. So as a young brat, I came up with the conclusion that you can make kids by kissing. Of course I kept on believing this up until junior high. Now that I have no excuse for.