I overheard some people talking about "giving head" during sex. I always thought this ment sticking your whole head (as in skull) up the women's genitalia. My girlfriend was quite surprised when I tried to do this to her especially as I have a larger then average head.
A childhood belief about oral sex

others believed things like this
- my sister when she was little thorght head lice tried to borrow into her head to get to her brainAnon
- 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 a head job was when you sucked on a guys head— Caitlin
- I used to believe that when people got shot in the head that their heads would blow up. — Emily
- i thought getting circumcised was to get the head of the penis cut off— Dee
- I thought if i picked my nose too many times, my head would blow up.— i m a moron