Until relatively recently (I think i was about 17 and I'm 25 now) I thought the saying "up and at em" was "up and Adam" since I heard it but never saw it written down.
A childhood belief about speaking

others believed things like this
- I used to believe that in China, instead of Adam and Eve eating an apple? They believed it was a banana.— smartygirl
- I thought my parents had written "Don't Worry, Be Happy".Anon
- when I was a child I had never seen Jennifer Lopez written down so I thought her name was Jenny Ferlopez x)— Cath
- I used to think that adam and the ants' stand and deliver was 'stand in your liver'.....— wook
- Until recently I thought that Scotland was seperate from England. I am 27 Anon
- up until recently I thought intern was just another word for a secretary (I'm 27 btw)— Axecutioner