I used to believe that my blood would stop circulating around my body if I didnt use the foot pump, that was located in my foot, to pump it around!
I think I heard that the heart was a pump and just got a bit confused.
A childhood belief about general

others believed things like this
- I used to believed that when I went to sleep my heart took a rest too, and didn't pump at all while I slept.— Lara
- My sister used to think that there was an oil well under every gas station that led directly to the gas pump.Anon
- I used to use the basketball pump in the air because I thought I was donating fresh air to the needy.— Emily
- I used to belive that if i put my foot in my mouth, I would get foot-and-mouth illness— Emily Sathrota
- When i was little i used to think that my foot was a "naughty part" that no one else was supposed to see.Anon
- When I was little I was conviced if you said twinkee in a mirror 3 time a foot would appear. Anon