When I was younger, I had a firm belief that if I ever fell from a high place (i.e. a cliff, skyscraper, etc.) I could simply grab on to something during my fall, or jump off of something right before I hit the ground.
A childhood belief about physics

others believed things like this
- I used to wonder why fortune cookies never predicted something bad like "you will fall off a cliff"— Izual
- I always thought that Little Richard was Cliff Richards younger brother— adam
- I used to believe that grown-ups got scared because they were so high off the ground.— Sammy
- Until I was in High School, I really thought that the "underground railroad" was under the ground.— S
- When I was younger, I thought I could run and fall off the edge of the earth. Anon
- I didn't want to get tall when I was younger because I believed that I would fall over. — Gabi