But this is Washington's birthday and the truthful he of the cherry tree would look down on me and frown.
11 seconds sound clip from the Holiday Inn (1942) movie soundboard.
You can hear this line at 00:58:58 in the Blu-ray version of the movie.
Quote context
[...]
- Don't you think it's getting a little stuffy in here?
- I could say that you're homely, just as homely as pie.
- But this is Washington's birthday and I've got to say you're beautiful 'cause I can't tell a lie
- I could say that you're stupid, nothing up in your crown.
- Hit it.
[...]