The box isn't half moving about. You'd better slow down over the causeway.
4 seconds sound clip from the The Mummy (1959) movie soundboard.
You can hear this line at 00:21:17.133 in the Blu-ray version of the movie.
Quote context
[...]
- Do you think we'd better tie that down?
- Aw, just past the nursing home, he said. It's only half a mile.
- Right.
- Giddyup!
- The mummy. It's waiting. It's always there.
- That's from the nuthouse. Perhaps one of them got out.
- The box isn't half moving about. You'd better slow down over the causeway.
- I'm not going to have my throat cut by no lunatic. Not for all the relics in Egypt.
- Take care, Jim. You'll have me in too if you're not careful.
- Oh, it's hopeless. Parts of this bog are next to bottomless. We'll never find it.
- Now, for some particulars, if you don't mind.
[...]