This is very dumb, but when I was in middle school, my sister explained blow jobs to me. She said you bob your head up and down on the penis, and that you could practice on a hotdog. I did not understand. I thought she meant like nodding bob your head. Like it would be in your mouth, and you would nod and it would hit your tongue, then the roof of your mouth, then your tongue etc. I practiced on a hotdog.

In high school, I learned what she actually meant, like bob your head so it goes in and out. I was a sheltered kid.