I didn't know your grandma was Dutch!
4 seconds sound clip from the Blazing Saddles (1974) movie soundboard.
You can hear this line at 00:05:57 in the Blu-ray version of the movie.
Quote context
[...]
- Horses! We can't afford to lose any horses, you dummy! Send over a couple of niggers.
- Sir, he specifically requested two niggers, but to tell a family secret, my grandmother was Dutch.
- Get on that hand car and take it down to the end of that line!
- Just trying to help you out.
- I didn't know your grandma was Dutch!
- Oh, de Camp Town Ladies sing this song, doo-dah, doo-dah.
- Camp Town race track five miles long, oh, doo-dah day.
- Going to run all night, going to run all day.
- I waged my money on the bobtail nag, somebody bet on the bay!
- Am I wrong... or is the world rising?
[...]