Due to their vague phonetic similarity, I somehow managed to confuse Satan and Saint Nick, taking the latter as one of the many nicknames for the former. Growing up in the U.S., I usually just heard him called Santa, so the truth took a little longer to dawn on me than it probably should have.
A childhood belief about father christmas

others believed things like this
- Wehan I was little I used to confuse Jesus with God with Santa Claus.— Gui
- My schoolmate Nick used to think that girl's farts smelt of roses.— Nathan
- I use to think that Bruce Springsteen's song "growing up" was called "throwing up"— glowworm
- I still belive that when a I sleep, my toys would have a party and play with each other until dawn.— Meah
- I used to confuse tentacles and testicles when I was younger. It was funny— Chelsea
- I used to think Elvis' "I'm All Shook Up" was "A Mushy Cup". How sad of me to confuse the lyrics of a king...— Sad, Sad, Girl