Since you is the prettiest gal, and I is the prettiest boy, it's only fair grits you accepts my proposal of marriage on this once-a-year proposal Sunday.
12 seconds sound clip from Snagglepuss - Feud for Thought (S1E2).
You can hear this line at 00:00:37.980 in the Blu-ray version of the episode.
Quote context
[...]
- Oh, thanks. Inconsiderate bounder, indeed.
- Figaro, figaro, figaro. It figures.
- I'm proposin' to my gal, her name is Suzie Sal.
- She's the prettiest thing in all the mountainside.
- Give me a little kiss, Suzie Sal. Kiss, kiss, kiss.
- Your lover boy is here, Suzie Sal.
[...]