I used to think (until I was about 18...) that giving head meant intercourse, because of the "head" of the penis.
A childhood belief about oral sex

others believed things like this
- i thought getting circumcised was to get the head of the penis cut off— Dee
- my sister when she was little thorght head lice tried to borrow into her head to get to her brainAnon
- I used to think headquarters meant somebody's head cut into 4.Anon
- i used to belive that if i fell on my head my head would come off while i was doing a cartwheelAnon
- I used to think that being fired meant they set you on fire.
Or they just chopped off your head.Anon - I used to think that a head job was when you sucked on a guys head— Caitlin