Nobody in my family has seen The Exorcist so for the longest time, we all thought "The power of Christ compels you" means that the speaker feels compelled to do good because of Christ. The rest of my family still believes that, and I still haven't seen The Exorcist.
A childhood belief about speaking

others believed things like this
- I believed that Jesus Christ was the son of the Christ family, i.e., Mary and Joseph Christ.— David Araújo
- When I first heard "The Exorcist," I thought that "The Exorcist" was something about exercising and work out.Anon
- for years i was afraid to throw up because i thought it meant i was possessed like in the exorcist.Anon
- I used to believe the Christ was born
on Christmas Day and crucified the
following Easter.— William Golding - I used to think that Christ the royal master leaned against the throne. rather than leads against the foe.Anon
- In a religious song, instead of “Jesus Christ” I heard “Cheese is Prize”— EJ