Carnival is the last three days preceding the Lent, which in Roman Catholic countries is given up to feasting and merrymaking. Then come the fasting and the penance.
12 seconds sound clip from the Gilda (1946) movie soundboard.
You can hear this line at 01:03:37.853 in the Blu-ray version of the movie.
Quote context
[...]
- Tell them... Tell them to come here in an hour.
- And, Johnny, you come now, will you? Immediately.
- What does it mean, Maria, exactly?
- In other words, make hay while the sun shines.
- You have a strange language, little one.
- Oh, I mean, three days of sowing wild oats, and then comes the harvest.
- You know, Maria, I have the funniest feeling.
- Don't tell anybody, but I'm most awfully superstitious. Don't tell anybody.
- No.
[...]