Rocky.
3 seconds sound clip from the Rocky IV (1985) movie soundboard.
You can hear this line at 00:06:32 in the Blu-ray version of the movie.
Quote context
[...]
- On the count of three. One, two, three!
- Oh, don't worry. I'll clean it up for you, Paulie.
- Ta-da.
- Rocky.
- What are you doing with that cake?
- Well, the party ain't over yet, you know? Still gotta celebrate some more. It's a special night.
[...]