i used to believe that the road sign "not a thru street" meant that they were still building the road and weren't finished yet.
A childhood belief about road signs

others believed things like this
- I used to believe the "Yield" from the road sign was somebody's name.— julia
- i always thought that a DEAD END sign
as where they put all the road kill.
— pav - I used to think that we were breaking a law every time my mom passed a "Do Not Pass" sign on the road. — Kyra
- i used to think that the road sign "dangerous" was actually "dang-er-roos" a kind of bouncy marsupial— owen cash
- my mom believed when she was little that a street sign that said don't walk meant you better run.— Sara Mclen
- I used to believe a dead end sign meant there was a graveyard at the end of the street or zombies — Still Out There