When I was little, my parents had a neon sculpture that lit our dining room. They told me that if I touched it, I would get electrocuted.
Fast forward 20 years...
I'm on a first date with my future husband, and we're seated next to a neon beer sign. He reaches out to touch it, and I say, "HEY! WHAT ARE YOU DOING? IF YOU TOUCH THAT, YOU'RE GOING TO GET ELECTROCUTED!"
He just laughed and told me it was fine as long as he didn't touch one of the joints between the neon tubes. I felt pretty dumb.
A childhood belief about physics

others believed things like this
- when i was 4 or 5 i used to think neon sour gummy worms were real because they always twisted and turned— HUGBUG09
- My dad told me that the reason Birds didn't get electrocuted on overhead wire was they had rubber feet!!— Derricki
- When i was litttle i used to believe that if a had a long enough ladder a could touch the sky.— Sarah Howell
- My sister told me not to touch hail stones because they were radioactive. — Mary K
- I used to believe that eyes where just like bubbles and if you where to touch them they would pop.— Adam
- If you touch your bellybutton, it will get infected.Anon