What does he know about water? He never took a bath in his life.
5 seconds sound clip from the The Big Trail (1930) movie soundboard.
You can hear this line at 00:53:25 in the Blu-ray version of the movie.
Quote context
[...]
- He stepped in a prairie-dog hole and broke his neck. Come near breakin' mine too.
- No. I was knocked out for a spell.
- Here, I'll put these in your wagon and help you across.
- Flack said we could only use the wheelers.
- What does he know about water? He never took a bath in his life.
- Shortie!
- I'll go greet the little filly.
- Greet, eh? Well, Lopez and me will go greet a jug.
- You take 'em from here on in, Dave. It's shallow water. I'll go back and get my saddle.
[...]