I'm busy then too.
3 seconds sound clip from the The Roaring Twenties (1939) movie soundboard.
You can hear this line at 00:36:30 in the DVD version of the movie.
Quote context
[...]
- Will I see you after the show?
- I'm sorry. I have an engagement.
- Yes.
- Do you mind if I drive by and blow my horn?
- You do that, I won't hear it.
- Masters, I'll be back tomorrow night to pick up that check.
[...]