It isn't easy to see when you're crying.
4 seconds sound clip from the Against the Drunken Cat Paws movie soundboard.
You can hear this line at 00:58:42.983 in the Blu-ray version of the movie.
Quote context
[...]
- Yes, that's right. Come on now, bow to each other. That's right.
- Brother, why are you crying?
- It isn't easy to see when you're crying.
- Come, let's go in. We can't stay out here, or we'll catch cold. Here, I'll fix you a drink.
- Hey, don't get the wrong one.
- Why do you have to drink so much?
- I drink to stop myself crying. It's the only way to get the poison out of my system.
[...]