We Catholics do the sign of the cross often to begin and end a prayer. When I was little I thought the sign of the cross was God's phone number. I couldn't figure out why we had to dial Him up when the prayer was finished.
A childhood belief about prayers

others believed things like this
- when I saw a sign with a deer on it I always thought deer had to cross the street by it. like a cross walk— only me
- I used to believe that in the Christian Prayer of the Faithful, we were responding, "Lord, harrow prayer."— Smelleanor
- I thought for the longest time that a No Standing traffic sign meant no person should stand near that sign.— Shannon
- When Madonna sang "let the choir sing" in "Like a Prayer", I thought she was singing "love by proxy"— Kristen
- I used to have to say the Lord's prayer everyday, but I would wonder where my daily bread was.— caledonia
- When I was learning the Lord's Prayer, I used to say, "Our Father, who does art in heaven...."— Karen