When I saw a Back to the Future II scene of Marty McFly talking to Doc Brown on the Walkie-Talkie, I thought Marty said "Duck, duck come in!"
A childhood belief about films

others believed things like this
- i thought that "aromatic" duck was actually "asthmatic" duck.
poor thing...— rachael - I always thought that duck sauce (from chinese restaurants) was duck poop.
— emily - Whenever I was upstairs on a bus, I didn't believe that it would fit under the bridge so I used to duck. — Dave, Lancashire
- I used to belive that if I didn't duck when going under bridges they would hit me.Anon
- My mother's name was Anna. She was called "Annemor"(Duck mama). I was convinced I was a duckling.— Christine Norway
- When I was child I used to believe the future going to be similar like in the film Back to the future part 2 — Frankie