But the weight of the iron horse, and the heat of its boiler caused the ice to break up!
9 seconds sound clip from the Jack Frost (1979) movie soundboard.
You can hear this line at 00:10:15 in the Blu-ray version of the movie.
Quote context
[...]
- I guess that's how it all started.
- From that moment on, Jack Frost began to think about being human.
- See, he thought Elisa really loved him.
- Jack was so lost in his daydreams that he didn't hear.
- Good short cut, Clangstomper. The water is hard. Ha ha ha! Forward! On, Clangstomper! On! Ha ha ha!
- But the weight of the iron horse, and the heat of its boiler caused the ice to break up!
- Oh, no! Help! Somebody! Help! Help!
- Jack Frost, not only are you a magician, you're a hero! Ha ha ha!
- And that made him happy and sad at the same time.
[...]