I used to think that if you sneezed while wearing a tampon it would shoot out like a rocket.
A childhood belief about periods

others believed things like this
- I used to believe that cars were propelled by their exhaust like some kind of rocket.Anon
- I used to believe that rocket ran on gasoline and that in order to save gas, we should end the space program.Anon
- I used to believe that the exhaust fumes coming from a car were actually what pushed it forward like a rocket — rocket car
- I used to think when somebody sneezed you were supposed to say 'Gableshew'.— gablesh
- I used to believe that if you sneezed with your eyes open you would die!— Becky
- I used to think that foreign people coughed and sneezed in a different language.— Even more stupid