I believed that a condom had to be used wile kissing eachother the french way. so you put the condom in your mouth and you kiss on the mouth and the condom prevents that aids will be exchanged by the mouthfluids.
I think I believed this because I saw a show on tv where they talked about the condom while they showed a kissing couple
A childhood belief about condoms

others believed things like this
- For some reason i used to think that condom was another name for your boobs! — Claire
- Until I was about 10 years old, I used to believe that a condom was a type of lollipop!— Marcel
- Used to believe that a condom was a little fold-up bag that you feed to your dog so it poop in a bag.— Anais Daehao
- When I was little I thought a condom was short for condominiam Anon
- i used to beilieve condom was used to plug up his pee hole...like ear plugs....Anon
- For some reason, I used to think that a 'condom' was a kind of hairstyle. No idea why.— SW