When I was younger, I heard my mom talking about a blow job. I took the context and concluded that it was a sexual thing, but unfortunantly, didn't have a clue what it really was. Until I hit high school, I really thought it was the act of blowing air on a penis.
A childhood belief about oral sex

others believed things like this
- when i first heard the name "blow job",i thought the meaning of that word was blowing a snot out of your nose.— myuka
- Thinking a blow job was someone just blowing on your butt.... or in your ear— Lynn
- In my second grade class everyone thought that sexual intercourse was "TALKING DIRRTY".— Israel Bliss
- I used to think that a blow job was drying your hair, like blowing your hair dry.Anon
- I used to think that if you didn't blow your nose and just sniffed the snot up, you head would blow up.Anon
- I used to think blow jobs were when you held a penis and blew on it. Of course this was when I was 12.— Marisa