I'll knock off two bucks because I can see you're a man who knows his trees.
5 seconds sound clip from the A Christmas Story (1983) movie soundboard.
You can hear this line at 00:38:16 in the Blu-ray version of the movie.
Quote context
[...]
- Well, don't you think it's a little large?
- Listen, Christmas only comes once a year. Why not?
- Why not?
- I'll knock off two bucks because I can see you're a man who knows his trees.
- This isn't one of those trees that all the needles falls off, is it?
- The old man loved bargaining as much as an Arab trader and he was twice as shrewd.
- You know, Dew Lock just bought one of those brand-new, green plastic trees.
[...]