Don't sell yourself short, judge. You're a tremendous slouch.
4 seconds sound clip from the Caddyshack (1980) movie soundboard.
You can hear this line at 00:17:19.295 in the Blu-ray version of the movie.
Quote context
[...]
- Spaulding, get dressed. You're playing golf today. No, I'm not, Grandpa. I'm playing tennis.
- You're playing golf and you're going to like it.
- Ty, what did you shoot today?
- Oh, I don't keep score, judge.
- Oh, well, how do you measure yourself with other golfers?
- Don't sell yourself short, judge. You're a tremendous slouch.
- Yeah! That's a doozy, judge!
- Colored boy? Why, you son of a bitch. I'll fix you, you little... Colored boy.
[...]