As a young child, I believed that if one held their poop long enough, it'd melt and one would have diarrhea.
A childhood belief about weeing and pooing

others believed things like this
- If you stood in front of the fire for too long your spine would melt!— Helen, Cumbria
- I used to believe that if you had to fart and held it in too long that it would cause you to blow upAnon
- I used to believe that if you held a fart in long enough it would come out as a burp.— Chris
- When I was young I used to think my testicles held the pee!Anon
- I believed that the rain would melt everything...I was terrified to go outside in the rain! — Cris
- My nephew (age 7) thought tampons were plugs for diarrhea. Anon