As a kid I always thought every coin and dollar was just called "money", and the denomination didn't matter. So a five dollar bill and two quarters was "three moneys".
A childhood belief about money

others believed things like this
- I bbelived that the process of "making money" was taking a dollar bill and ironig it.Anon
- i used to think that if i tore a dollar bill in half it would make fifty cents— stacy
- that if you rip a dollar coins come outAnon
- I used to think that of you ripped a dollar 100 pennies would fall out of the rip.— Glad I never tried it
- I used to believe that coin change could turn into actual paper money if you left it alone for a long time. — Marcus O
- I used to believe that on money, the treasurer of the United States really signed every bill prited her self.— Tiffany