I think you have a customer.
5 seconds sound clip from the A Charlie Brown Christmas movie soundboard.
You can hear this line at 00:04:20 in the Blu-ray version of the movie.
Quote context
[...]
- Try to catch snowflakes on your tongue. It's fun.
- It's too early. I never eat December snowflakes. I always wait until January.
- You think you're so smart with that blanket. What are you gonna do with it when you grow up?
- Maybe I'll make it into a sport coat.
- I think you have a customer.
- Wait a minute. Before you begin, I must ask that you pay in advance. Five cents, please.
- All right, now, what seems to be your trouble?
[...]