When I was on vacation in Hawaii I saw some fruit flavored condoms in a store, like pineapple and mango for example. At that point I knew what condoms were for but not about the existence of oral sex so I couldn't think of why they were flavored. At the end I came to the conclusion that it was so there would be a little bit of a fruity aroma during sex.
A childhood belief about oral sex

others believed things like this
- i used to think that condoms were rubber circles and i never knew how they stayed on— hello
- I knew someone who thought condoms were so that the MEN wouldn't get pregnant!Anon
- I convinced my boyfriend that paprika flavored crisps were made from donkeys...he was 20 at the time.Anon
- I believed Dr. Pepper was pepper-flavored medicine and was afraid to drink it.Anon
- i used to think that condoms were gum and i tried to buy one once when i was about 8! — silly
- i used to think condoms were for your ears!— Hanky