Oh, God! You've really no idea.
2 seconds sound clip from the Heroes of the East (1978) movie soundboard.
You can hear this line at 00:02:02.900 in the DVD version of the movie.
Quote context
[...]
- I've come back to arrange your wedding. Now you're sick. Why don't you see the doctor?
- I'd rather die... than marry her.
- Ah, nonsense. It's all settled now.
- I'm not gonna marry any ugly Japanese girl.
- Oh, God! You've really no idea.
- Koda is a real pretty girl. Make no mistake there.
- Koda's father has helped our company a lot.
- I mean, he's invaluable. So then, this marriage must go on.
- And she's here. You can't back out now.
[...]