When i was a young teenage driver, whenever my car battery needed to be "jumped off" with jumper cables, i thought it was called "jacking off" my car, and i proceeded to ask someone to "jack off" my car on several different occasions - oops! :)
A childhood belief about cars

others believed things like this
- I thought Jack was a nickname for Jackery ( like Zack and Zachary).— Bootlebat
- When I was a kid, I thought the musical Mamma Mia did songs from the A*Teens (the teenage version of Abba)Anon
- Follow me and I will make you vicious old men.....OOPS that was really fishers of men— oddsox
- "She's got the Jack" by ACDC was "She's got the Clap".— Cybela
- Since the girls name Jackie is short for Jacqueline, I thought the boys name Jack was short for JackalAnon
- I used to believe that tornadoes were spinning jack-o-lanterns in the air bent on destroying my house.Anon