You'd better let him pass.
3 seconds sound clip from the Chitty Chitty Bang Bang (1968) movie soundboard.
You can hear this line at 01:18:33 in the Blu-ray version of the movie.
Quote context
[...]
- They're trying to get past, Daddy.
- Fine.
- Go on. Get over, you half-wit.
- It's Father. And he's in one of his tempers.
- Get out of the way. Move over, you idiot!
- What do you think you're doing?
[...]