I heard a similar story about lip-reading and silent movies.
There was a scene in which the hero sweeps the heroine into his arms and saves her from danger.
According to the titles, she was saying something like, 'thank you, thank you, my darling!'
What she was actually saying was, 'Drop me,you b-----d, and I'll break every bone in your body!'
We now return to our regularly scheduled thread.
Singin' in the Rain does a take on that.
Don Lockwood: [
while filming a passionate love scene, interrupted with kisses] Why, you rattlesnake! You got that poor kid fired.
Lina Lamont: That's not all I'm gonna do if I ever get my hands on her.
Don Lockwood: I never heard of anything so low. Why did you do it?
Lina Lamont: Because you liked her. I could tell.
Don Lockwood: So that's it. Believe me, I don't like her half as much as I hate you, you reptile.
Lina Lamont: Sticks and stones may break my bones...
Don Lockwood: I'd like to break every bone in your body.
Lina Lamont: You and who else, you big lummox?