Well, if you know, don't tell, because a 'slip of a ship can sink a lip.'
4 seconds sound clip from The Honeymooners (1955) - The Bensonhurst Bomber sitcom.
You can hear this line at 00:17:26.406 in the Blu-ray version of the TV Series.
Quote context
[...]
- If you knew how to take care of yourself, you wouldn't have to leave town.
- All right, Ralph. Are you going to tell me?
- No, I am not going to tell you. No, I am not. And just for that, I ain't even going.
- There. You satisfied? Now you ruined a wonderful trip I was going on.
- Well, if you know, don't tell, because a 'slip of a ship can sink a lip.'
- Well, looks like you're gonna have to stick around, Ralph, so, uh...
- Yeah, you're a big help, Norton.
- Why don't you let me give you a few pointers on boxing?
[...]