I used to believe that your loins were the muscles in your legs. i only found out the truth yesterday when my boyfriend told me what they really were - i am 24 and i'm still not sure that he's right!!!
A childhood belief about rude bits

others believed things like this
- i used to think that housten was a real person and not a place, im 16 and i found this out yesterday......!lol— jess p
- I thought that eating chicken gave me muscles (chicken and muscles sound the same in Mandarin).— NG
- I thought your loins were kidneys, and nobody corrected me until I was a teenagerAnon
- I used to think that oral sex was talking about sex. I was wrong when I found out the truth.Anon
- I used to believe that the meat you eat is turning to be your own muscles.— Yossi
- If you eat your fruits and vegetables you will grow much faster and your muscles will be very happy!— Bruno