Clark, please. He doesn't know any better.
4 seconds sound clip from the Christmas Vacation (1989) movie soundboard.
You can hear this line at 00:58:24 in the Blu-ray version of the movie.
Quote context
[...]
- Oh, the silent majesty of a winter's morn.
- The clean, cool chill of the holiday air.
- And an asshole in his bathrobe emptying a chemical toilet into my sewer.
- Yeah.
- Have you checked our shitters, honey?
- Clark, please. He doesn't know any better.
- He oughta know it's illegal.
- I have this terrible suspicion that Cathrine and Eddie don't have any presents for their kids.
[...]