For most of my life, I've thought that a jukebox was actually a "jutebox."
I also recently found out that it's "eavesdrop" as apposed to "easedrop," which I thought it was.
A childhood belief about speaking

others believed things like this
- I recently found out that Euthanasia is not Asian youth.Anon
- I used to believe that a vitamin was a small animal
only recently I have found out that it is not true... :)— Sylwia - 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
- I thought that some animals had just been "invented" recently (like within the last 50 years or so)— Makron
- Until very recently, I thought "archives" was pronounced like "are chives".— Mitsuki