When I was little I thought you get pregnant from the kiss on your wedding day. Because of this, I wanted to get my tubes tied right after the kiss. I got the idea from my mother, who got her tubes tied after I was born. I also thought the babies came out of the belly button.
I was never taught that being attracted to the opposite sex was bad (i wasn't born into a religious household), I just thought it was a humorous subject. Probably because the cartoons I watched often portrayed attraction to the opposite sex a humorous subject. Of course I don't believe this anymore.
I thought the food you ate was stacked in a single file tower in your stomach.
In car rides, I used to create this character in my head and he would hop on trees, telephone lines, and such as the car moved. If he didn't hop in time he would get left behind.