I used to believe that a blow job was just that. The girl sat and blew on the guy's dick. I kept wondering why that was so exciting. DUH?
A childhood belief about oral sex

others believed things like this
- 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
- a blowjob is were a girl blew ur penis up after sex.......stupid i know.— james
- I used to think that if you didn't blow your nose and just sniffed the snot up, you head would blow up.Anon
- Circumcision meant getting your dick and testicles cut off— John
- i used to take showers with my dad when i was like 3 and i always got scared cuz i thot his dick was a snakeAnon
- i used to believe that a blow job was when you got payed to blow up ballowns— blown away